Zend Preparation | Online PHP Quiz

PHP Basics singleQuestion_time

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1/260

You developed a big application accessed by several thousand users at the same time. Suddenly, your web server stops responding and users are getting connection errors.What could have happened?

The database server was terminated because of the unusually high amount of database accesses.

The web server was misconfigured so that it ran into virtual memory usage and consequent resource starvation because of too many child processes.

You didn’t optimize your code design properly.

2/260

Considering the following code, what will the output be?

<?php
$a = "0.0";
$b = (int)$a;
if ( (boolean)$a === (bool)$b) {
echo "True";
} else {
echo "False";
}

False

True

Syntax error; this won’t run

3/260

Which of the following are superglobals in PHP? (choose three)

$_DATA

$_COOKIES

$_GLOBAL

$_COOKIE

$_FORMS

$_ENVIRONMENT

$_SERVER

$_REQUEST

4/260

What is the output of the following?

<?php
$a = 7;
$b = 4;
function b($a, $b) {
   global $a, $b;
   $a += 7;
   $a++;
   $b += $a;
   return true;
}
echo $b, $a;
?>

1519

1915

5/260

You run the following script:

<?php
function odd(){
    for($i=1; $i<=50; $i=$i+2)
    {
        echo "$i";
    }
}
echo "The last value of the variable \$i: $i";
?>

What will be the output?

Script will throw an notice.

The last value of the variable $i:

The last value of the variable $i: 50

The last value of the variable $i: 49

6/260

What will be the output of the following PHP code ?

<?php
$x = 10;
$y = 5;
$z = 3;
if ($x / $y / $z)
    print "hi";
else
    print "hello";
?>

hello

error

no output

7/260

What will be the output of the following PHP code ?

<?php
$i = 10;
$j = 0;
if ($i || ($j = $i + 10)) {
    echo "true";
}
echo $j;
?>

true0

true20

8/260

Which one of the following four logical operators of PHP is not binary?

XOR

NOT

AND

9/260

What will be the output of the following PHP code ?

<?php
$i = 0;
while ($i = 10)
{   
    print "hi";
}
print "hello";
?>

hihello

infinite loop

error

hello

10/260

10.

What will be the output of the following PHP code ?

<?php
$color = red;
echo "$color" . red ;
?>

red red

error

nothing

red

11/260

11.

What will be the output of the following PHP code?

<?php
    $num  = 1;
    $num1 = 2;
    print $num . "+". $num1;
?>

1.+.2

Error

1+2

12/260

12.

What will be the output of the following PHP script:

<?php
function modifyArray (&$array) 
{
    foreach ($array as &$value)
    {
         $value = $value + 2; 
    } 
    $value = $value + 3; 
 } 
$array = array (1, 2, 3); 
modifyArray($array); 
print_r($array);
?>

Array ( [0] => 1 [1] => 2 [2] => 3 )

Array ( [0] => 5 [1] => 7 [2] => 9 )

Array ( [0] => 3 [1] => 4 [2] => 8 )

Array ( [0] => 2 [1] => 4 [2] => 6 )

13/260

13.

You run the following script:

<?php
    $a=5 < 2;
    echo (gettype($a));
?>

What will be the output?

boolean

integer

string

Script will through an error.

14/260

14.

Which of the following are valid identifiers (Choose 3)

function 4You() { }

$_1 = "Hello World";

$1 = "Hello";

function _4You() { }

function object() { }

15/260

15.

What will be the output of the following PHP code ?

<?php
 $a = 5; $b = -7; $c =0; 
 $d = ++$a && ++$b || ++$c;
 print $d; print $a;
?>

16/260

16.

Which of the following functions returns current Unix timestamp?

date()

strtotime()

time()

localtime()

17/260

17.

What would you replace ??????? with, below, to make the string Hello, World! be displayed?

    function myfunction() {
        /* ??????? */
        echo $string;
    }
    myfunction("Hello, World!");

list($string) = func_get_args();

$string = $argv[1];

$string = $_ARGV[0];

$string = get_function_args();

18/260

18.

What will be the output of the following PHP code ?

<?php
echo 'Hello World';
<html>
Hello world
</html>
?>

Hello World Hello World

Hello <html> Hello world </html>

Hello world

Syntax Error

19/260

19.

What will be the output of the following PHP code ?

<?php
define("__LINE__", "PHP is a scripting language");
echo __LINE__;
?>

PHP is a scripting language

ERROR

__LINE__

20/260

20.

Consider the following script:

<?php
    echo date("M-d-Y", mktime(0, 0, 0, 12, 32, 1995));
?>

What will be the output of the above script?

Fatal error

Jan-01-1995

Date out of range error

Jan-01-1996

21/260

21.

Consider the following PHP script:

<html>
<head>
<title>
    This is a test script.
</title>
</head>
<body>
<?php
    echo (int) ((0.1 + 0.7) * 10);
?>
</body>
</html>

What will be the output of the PHP script?

The PHP script will return an error message.

22/260

22.

What will be the output of the following PHP code ?

<?php
     $one = "one";
     $two = "two";
     print($one,$two);
?>

one, two

onetwo

error

one

23/260

23.

What will this script output?

<?php
function A() {
    try {
        b();
    } catch (Exception $e) {
        echo "Exception caught in " . __CLASS__;
    }
}
function B() {
    C();
}
try {
    A();
} catch (Error $e) {
    echo "Error caught in global scope: " . $e->getMessage();
}

Error caught in global scope: Call to undefined function C()

None of the above

Error caught in global scope: Call to undefined function b()

Exception caught in A

24/260

24.

Which of the following PHP variable names is not a valid variable name?

$var

$__var

$_2var

$2var

25/260

25.

What will this script output?

<?php
$a = "foo";
$$a = "bar";
$a = "Hello world";
echo ${"foo"};
?>

Hello world

Syntax error; this won’t run

bar

foo

26/260

26.

What is the length of the hash generated by the crc32() crypto function?

128

512

27/260

27.

Consider the following code:

<?php
function modvalue()
{
       $a=20;
       $b=4;
       $c=$a%$b;
       print($c);
} 
modvalue();
?>

What will be the value of the variable c?

28/260

28.

What will be the output of the following PHP code ?

<?php
$a = "1";
$b = "0";
if ((int)$a && $b) 
    print"hi";
else 
    print "hello";
?>

hello

error

no output

29/260

29.

Which of the following expressions multiply the value of the integer variable $a by 4?

$a += $a + $a;

$a >>= 2;

$a <<= 2;

$a *= pow (2, 2);

30/260

30.

What will the code output?

<?php
$a = 0;
$b = $a++;
$a = $a + 1;
echo --$a;

An error will occur

31/260

31.

What is the output of this script?

<?php
$a = 3;
echo $a >> 1;

32/260

32.

Which of the following is related to APC (Alternative PHP Cache)?

Byte code caching

Namespace

Variable

Constant

33/260

33.

What is the output of this code?

<?php
define('PI', 3.14159625);
define('_PI', "3.1459625");
$radius = 10;
if (PI == _PI) {
 $area = (int)PI * $radius ** 2;
 echo $area;
} else {
 echo "dhaka";
}

986.962699801

dhaka

1600

300

34/260

34.

Which of the following is NOT a magic predefined constant?

__LINE__

__METHOD__

__CLASS__

__DATE__

__FILE__

35/260

35.

Consider the following PHP script:

<?php
$a = 5; 
$b = 4; 
$c = ($a++ * ++$b);  
echo $c;
?>

What will be the output?

36/260

36.

You run the following PHP script:

<?php
function calc()
{
    $x=10;
    $b=++$x;
    print($b);
}
calc();
?>

What will be the value of the variable b?

The script will throw an error message.

37/260

37.

What will be the output of the following PHP code ?

<?php
    $one = "one";
    $two = "two";
    print($one==$two);
?>

false

true

error

nothing

38/260

38.

Which of the following type of variables are special variables that hold references to resources external to PHP (such as database connections)

Resources

Objects

Strings

Arrays

39/260

39.

Choose the appropriate function declaration for the user-defined function is_leap(). Assume that, if not otherwise defined, the is_leap function uses the year 2000 as a default value:

<?php
    /* Function declaration here */
    {
        $is_leap = (!($year %4) && (($year % 100) || !($year % 400))); 
        return $is_leap;
    }
    var_dump(is_leap(1987)); /* Displays false */
    var_dump(is_leap()); /* Displays true */
?>

is_leap($year default 2000)

function is_leap(2000 = $year)

function is_leap($year default 2000)

function is_leap($year)

function is_leap($year = 2000)

40/260

40.

How can a script come to a clean termination?

When PHP crashes

When exit() is called

When Apache terminates because of a system problem

When the execution reaches the end of the current file

41/260

41.

Which of the following data types are compound data types?

Strings

Booleans

Objects

Array

42/260

42.

<?php
    class Foo
    {
?>

<?php
        function bar()
        {
            print "bar";
        }
    }
?>

which is correct?

will work, class definitions can be split up into multiple PHP blocks.

will work, class definitions can be split up into

will not work, class definitions must be in a single PHP block.

will not work, class definitions must be in a single file but can be in multiple PHP blocks.

43/260

43.

What does the following code snippet do?

$a = `ls -l`;

It will cause the output of the UNIX ls command to be stored inside $a.

It will cause an error.

It will not give any result as ls -l is just a string enclosed under single quotes.

It will cause a warning message.

44/260

44.

What will be the output of the following PHP code ?

<?php
$i = 0
do
{
    print "hi";
    $i++;
}
while ($i != 3);
?>

hihihi

hihi

hihihihi

45/260

45.

What will be the output of the following PHP code?

<?php
    $total = "25 students";
    $more = 10;
    $total = $total + $more;
    echo "$total";
    ?>

Error

25 students

35 students

46/260

46.

Which of the following statements are true when applied to a Registry pattern? (choose two)

It takes responsibility for instantiating objects

It implements ArrayAccess

Only one instance of the class can exist

It is designed to store values of various types

It uses static methods

47/260

47.

Which of the following is NOT a strongly typed language?

C++

PHP

JAVA

48/260

48.

Consider the following script:

<?php 
      echo strtotime("january 1, 1901"); 
?>

What will be the output of the above PHP script if the older versions of glibc are present in the operating system?

-2177424000

12365

14345

49/260

49.

What will this script output?

<?php
function A() {
    try {
        b();
    } catch (Exception $e) {
        echo "Exception caught in " . __CLASS__;
    }
}
function B() {
    echo 5 / "five";
}
try {
    A();
} catch (Error $e) {
    echo "Error caught in global scope: " . $e->getMessage();
}

None of the above

Error caught in global scope: Call to undefined function C()

Exception caught in A

Error caught in global scope: Call to undefined function b()

50/260

50.

Which PHP functions may be used to find out which PHP extensions are available in the system?

extension_loaded()

phpinfo()

get_loaded_extensions

get_extension_funcs()

51/260

51.

What will be the output of the following PHP code ?

<?php
$y = 2;
if (--$y == 2 || $y xor --$y)
{
    echo $y;
}
?>

no output

52/260

52.

What will be the output of the following PHP code ?

<?php
$x = 1;
if ($x = $x&0)
    print $x;
else
    break;
?>

Fatal error

no output

53/260

53.

Function world() is defined in the namespace 'myapp\utils\hello'. Your code is in namespace 'myapp'.
What is the correct way to import the hello namespace so you can use the world() function?

use utils\hello

use myapp\utils\hello\world;

use hello

use mayapp\utils\hello

54/260

54.

when PHP is running on a command line, what super-global will contain the command line arguments specified?

$_ENV

$_ARGV

$_SERVER

$GLOBALS

$_POST

55/260

55.

PHP is a _____ scripting language based on the _____ engine. It is primarily used to develop dynamic _____ content, although it can be used to generate _____ documents (among others) as well.

Perl-based, PHP, Web, Static

Dynamic, PHP, Database, HTML

Zend-based, PHP, Image, HTML

Embedded, Zend, Docbook, MySQL

Embedded, Zend, HTML, XML

56/260

56.

What will be the output of the following PHP code ?


<?php
$a = 0x6db7;
print $a<<6;
?>

no output

error

1797568

0x6dc0

57/260

57.

What will be the output of the following PHP code ?

<?php
$i = 0
while ($i != 3)
{
    print "hi";
    $i++;
}
?>

hihihihi

hihi

hihihi

58/260

58.

What will be the output of the following code?

<?php 
    $foo = 'Bob';              
    $bar = &$foo;              
    $bar = "My name is $bar";  
    echo $bar;
    echo $foo;
?>

My name is BobBob

My name is Bob Bob

My name is BobMy name is Bob

Error

59/260

59.

Which values should be assigned to the variables $a, $b and $c in order for the following script to display the string Hello, World!?

$string = "Hello, World!";
$a      = '';
$b      = '';
$c      = '';
if ($a) {
    if ($b && !$c) {
        echo "Goodbye Cruel World!";
    } else if (!$b && !$c) {
        echo "Nothing here";
    }
} else {
    if (!$b) {
        if (!$a && (!$b && $c)) {
            echo "Hello, World!";
        } else {
            echo "Goodbye World!";
        }
    } else {
        echo "Not quite.";
    }
}
?>

False, True, False

True, True, False

True, True, True

False, True, True

False, False, True

60/260

60.

The function gc_collect_cycles() is used to do which of the following?

Initiate garbage collection to free up memory

Flush the opcode cache

Pause the script for a certain number of processor cycles

There is no such function

61/260

61.

What is the output of the following code?

<?php
$x = 1;
function print_conditional() {
   static $x;
   if($x++ == 1)
      echo "many";
   echo "good";
   echo "things";
   return $x;
}
print_conditional();
$x++;
print_conditional();
?>

manygoodthings

manygoodthingsmanygoodthings

goodthingsgoodthings

there is no output

goodthingsmanygoodthings

62/260

62.

What will be the output of the following PHP code ?

<?php
$y = 2;
$w = 4;
$y *= $w /= $y;
echo $y, $w;
?>

80.5

63/260

63.

What would happen when the following code was run?

<?php
define('Tree', 'oak');
echo 'This tree is: ' . tree;
?>

An error

A notice

This tree is: oak (and a notice)

This tree is: tree (and a notice)

This tree is: (and a notice)

64/260

64.

What is the difference between the include and require language constructs?

Require constructs cause a fatal error if the file can't be read

Include constructs cause a fatal error if the file doesn't exist

There is no difference other than the name

Require constructs can't be used with URL filenames'

65/260

65.

What is the output of the following PHP code?

       define("FOO", 10);
       $array = [10 => FOO, "FOO" => 20];
       echo $array[$array[FOO]] * $array["FOO"];

200

100

FOO

66/260

66.

What will be the output of the following PHP code ?


<?php
$a = 1; $b = 1; $d = 1;
print ++$a + ++$a+$a++; print $a++ + ++$b; print ++$d + $d++ + $a++;
?>

742

869

error

368

67/260

67.

What set of value it will give?

$data = "foo:*:1023:1000::/home/foo:/bin/sh"; 
list($user, $pass, $uid, $gid, $gecos, $home, $shell) = explode(":", $data); 
echo $user; echo $pass;

foo:*1023

Foo

*foo

foo*

68/260

68.

What will be the output of the following PHP code ?

<?php
$a = 10;
echo ++$a;
echo $a++;
echo $a;
echo ++$a;
?>

11111213

11111212

11121213

11111112

69/260

69.

What will be the output of the following PHP code ?

<?php
$i = 0;
while (++$i && --$i)
{   
    print $i;
}
?>

1234567891011121314....infinitely

error

01234567891011121314....infinitely

no output

70/260

70.

What does the following function do, when passed two integer values for $p and $q?

<?php
function magic($p, $q)
{  
     return ($q == 0)    ? $p    : magic($q, $p % $q);
}
?>

Determines if they are both even or odd.

Determines the greatest common divisor between them.

Switches the values of $p and $q.

Loops infinitely.

71/260

71.

Which version of PHP introduced Try/catch Exception?

PHP 6

PHP 4

PHP 5

PHP 5 and later

72/260

72.

What will be the output of the following PHP code?

<?php
   $team = "arsenal";
    switch ($team) {
        case "manu":
            echo "I love manu";
        case "arsenal":
            echo "I love arsenal";
        case "manc":
            echo "I love manc";
    }
?>

I love arsenal

I love arsenalI love manc

Error

I love arsenalI love mancI love manu

73/260

73.

Which of the following options shows the correct IF statement format?

if {expression} ( // code to execute if the expression evaluates to true )

if (expression) ( // code to execute if the expression evaluates to true )

if (expression) { // code to execute if the expression evaluates to true }

if [expression] ( // code to execute if the expression evaluates to true )

74/260

74.

What will this script output?

<?php
$a = "0";
$c = $b = empty($a);
$d = ++$b + $a;
echo $d;

Syntax error; you can’t assign two variables on one line

75/260

75.

What is the output of the following code?

<?php
$a = 42 & 05 + 17;
echo $a;
?>

76/260

76.

What will be the output of the following PHP code ?

<?php
$x = 1;
if ($x = $x&0)
    print $x ;
else
    print "how are u";
?>

error

how are u

77/260

77.

What will be the output of the following PHP code ?

<?php
$y = 2;
if (--$y <> ($y != $y++))
{
    echo $y;
}
?>

no output

78/260

78.

What is the output of the following line of code?

<?php
echo "4" + 05 + 011 + ord('a');
?>

117

115

79/260

79.

Which of the following type of variables are special type that only has one value: NULL?

Strings

NULL

Doubles

Booleans

80/260

80.

Consider the following code:

<?php
    $a;
    for($a=1;$a<=100;$a++)
    {
    if($a==50)
    {
        continue;
    }
    print($a);
    }
?>

What will be the output of the program?

A series from 1 to 100 will be printed. The number 50 will not be printed.

A series from 51 to 100 will be printed.

A series from 1 to 50 will be printed.

A series from 1 to 100 will be printed.

81/260

81.

What will be the output of the following PHP code ?

<?php
$i = 2;
while (++$i)
{   
    while ($i --> 0)
        print $i;
}
?>

infinite loop

210

no output

82/260

82.

What will be the output of the following PHP code ?

<?php
echo "echo "Hello World"";
?>

echo Hello world

Hello world

Error

echo 'Hello world'

83/260

83.

What will be the output of the following PHP code ?

<?php
for ($i = 0; $i < 5; $i++)  
{
    for ($j = $i;$j > $i; $i--)
        print $i;
}
?>

infinite loop

no output

0 1 0 1 2 0 1 2 3 0 1 2 3 4 0 1 2 3 4 5 0 1 2 3 4 5

0 1 2 3 4 5

84/260

84.

Consider the following code:

<?php
function add()
{
       $x=10;
       $y=5;
       $x+=$y;
}
?>

What will be the value of x and y?

x=15, y=10

x=5, y=15

x=15, y=5

x=10, y=5

85/260

85.

Which of the following are NOt case sensitive in php? Choose all that apply.

Class names

Variable names

Namespaces

Function names

86/260

86.

What will be the output of the following PHP code ?

<?php
$b = 1;
switch($b)
{
case 1.0:
    print "hi";
    break;
case 1:
    print "hello";
    break;
default:
    print "hi1";
}
?>

hihellohi1

hihello

hello

87/260

87.

What will the output of this function be?

<?php
$number = 1234.5678;
echo number_format($number, 2, ',', '.') . PHP_EOL;

1,234.568

None of the above

1,235

1.234,57

88/260

88.

What will be the output if we declare "ob_start()" function in PHP?

none of these.

PHP will start displaying the value of last object.

PHP does not output anything.

PHP will start displaying the value of current object.

89/260

89.

What is the output of this script?

<?php
echo 10 <=> 10 << 1;

-1

90/260

90.

what is the output of the following script?

<?php
    function fibonacci ($x1, $x2)
    {
        return $x1 + $x2;
    }
    $x1 = 0;
    $x2 = 1;
    for($i = 0; $i < 10; $i++){
        echo  fibonacci ($x1, $x2). ',';
    }
?>

1,2,3,4,5,6,7,8,9

1,1,1,1,1,1,1,1,1,1,

1,2,3,4,5,6,7,8,9,10,

1,2,3,5,8,13,21,34,55,89,

91/260

91.

What is the value displayed when the following is executed? Assume that the code was executed using the following URL:

testscript.php?c=25 
<?php
    function process($c, $d = 25)
    {
        global $e;
        $retval = $c + $d - $_GET['c'] - $e;
        return $retval;
    }
    $e = 10;
    echo process(5);
?>

-5

92/260

92.

What will be the output of the following PHP code ?

<?php
    $one = "one";
    $two = "one";
    print($one == $two);
?>

false

true

error

93/260

93.

Consider the following script:


<?php
    function myfunction($a, $b = true)
    {
        if($a && !$b) {
            echo "Hello, World!\n";
        }
    }
    $s = array(
         0 => "my",
         1 => "call", 
         2 => '$function', 
         3 => ' ',
         4 => "function", 
         5 => '$a',
         6 => '$b', 
         7 => 'a',
         8 => 'b',
         9 => ''
        );
    $a = true;
    $b = false;
    /* Group A */
    $name = $s[?].$s[?].$s[?].$s[?].$s[?].$s[?];
    /* Group B */
    $name(${$s[?]}, ${$s[?]});
?>

Each ? in the above script represents an integer index against the $s array. In order to display the Hello, World! string when executed, what must the missing integer indexes be?

Group A: 4,3,0,4,9,9 Group B: 7,8

Group A: 1,3,0,4,9,9 Group B: 7,6

Group A: 0,4,9,9,9,9 Group B: 7,8

Group A: 1,3,2,3,0,4 Group B: 5,8

94/260

94.

What will the following script output?

<?php
    $x = 3 - 5 % 3;
    echo $x;
?>

null

95/260

95.

How to use header() function in PHP correctly?

header("Location: , newpage.php");

header("Location" : "newpage.php");

None of these

header("Location: newpage.php");

96/260

96.

You run the following script:

<?php
    $a = 6 - 10 % 4;
    echo $a;
?>

What will be the output?

97/260

97.

What will be the output of the following PHP code ?

<?php
const $b = 1;
switch($b)
{
case 1:
    print "hi";
    break;
case 1:
    print "hello";
    break;
default:
    print "hi1";
}
?>

hello

Parse error

hihello

98/260

98.

What will this code output?

    namespace A;
    $closure = function() { echo __NAMESPACE__; };
    namespace B;
    $closure = function() { echo __NAMESPACE__; };
    namespace C;
    $closure();

This produces an error; the closure is not defined in namespace C

This produces an error; functions and closures cannot be namespaced

99/260

99.

Can I generate DLL files from PHP scripts like i can in Perl ?

yes

100/260

100.

What is the output of the following script?

<?php
    $a = 10;
    $b = 20;
    $c = 4;
    $d = 8;
    $e = 1.0;
    $f = $c + $d * 2;
    $g = $f % 20;
    $h = $b - $a + $c + 2;
    $i = $h << $c;
    $j = $i * $e;
     print $j;
?>

128

342

242.0

256

101/260

101.

What will be the output of the following PHP code ?

<?php
$a = "hello";
if ($a.length)
    print $a.length;
else
    print "hi";
?>

hellolength

error

102/260

102.

What will be the output of the following PHP code ?

<?php
for ($i = 0; -5 ; $i++)
{
    print"$i";
    if ($i == 3)
        break;
}
?>

01234

012345

error

0123

103/260

103.

What will be the output of the following PHP code?

 <?php
    $score = 1234;
    $scoreboard = (array) $score;
    echo $scoreboard[0];
    ?>

Error

1234

104/260

104.

You run the following PHP script:

<? 
    echo (int) "1235Jason"; 
?>

What will be the output?

1235

1235Jason

It will throw a script error.

105/260

105.

What will be the output of the following PHP code ?

<?php
$i = "";
while ($i)
{   
    print "hi";
} 
while($i < 8) {
    $i++;
    print "hello";
}
?>

Hi is printed 8 times

hello printed 8 times

Hi is printed 8 times, hello 8 times

Hi is printed once, hello 8 times

106/260

106.

What is the output of:

<?php
$a = 10;
echo strlen($a) . count($a);
do {
   echo $a . "elephpant ";
   $a++;
} while($a <= 1);
?>

10elephpant

1210elephpant

2110elephpant

107/260

107.

Which of the following code can be used to create case insensitive constant?

<?php define("GREETING","How are you today?",TRUE); echo constant("greeting"); ?>

<?php define("GREETING","How are you today?",'USECASE'); echo constant("greeting"); ?>

<?php define("GREETING","How are you today?",FALSE); echo constant("greeting"); ?>

<?php define("GREETING","How are you today?"); echo constant("greeting"); ?>

108/260

108.

What will be the output of the following PHP code ?

<?php
$color = 'red';
echo "\$color";
?>

red

\red

$color

Error

109/260

109.

What will be the output of the following PHP code ?

<?php
define("GREETING", "PHP is a scripting language");
echo $GREETING;
?>

PHP is a scripting language

Undefined variable: GREETING

no output

$GREETING

110/260

110.

Which of the following tags should you avoid using to include php in htML?

None of the above; these are all fine

<?php

111/260

111.

The PHP syntax is most similar to:

JavaScript

VBScript

Perl and C

112/260

112.

What will be the output of the following PHP code ?

<?php
for(++$i; ++$i; ++$i)
{
    print $i;
    if ($i == 4) 
        break;
}
?>

134

1234

113/260

113.

What will this script output?

<?php
$a = "Hello";
$B = " world";
ECHO $a . $b;

Nothing; it won't run

Hello world

Hello

an error message because the variable b is not defined

114/260

114.

What is the output of this script?

<?php
$a = "apples" <=> "bananas";
$b = $a ?? $c ?? 10;
echo $b;

apples

-1

115/260

115.

What will be the output of the following PHP code ?

<?php
class myObject { }
define('myObject::CONSTANT', 'test');
echo myObject::CONSTANT; 
?>

myObject::CONSTANT

error

test

no output

116/260

116.

What will be the output of the following PHP code ?

<?php
for ($i = 0; $i % ++$i; $i++) 
{
    print"i";
}
?>

error

no output

infinite loop

117/260

117.

You run the following PHP script:

<?php
    $num = -123test;
    $newnum = abs( $num );
    print $newnum;
?>

What will be the output?

syntax error

123

-123

118/260

118.

What will be the output of the following PHP code ?

<?php
    $one = "one";
    $two = "two";
    print($one$two);
?>

nothing

error

onetwo

one

119/260

119.

Consider the following segment of code:

<?php
    define("STOP_AT", 1024);
        $result = array();
    /* Missing code */
    {
        $result[] = $idx;
    }

    print_r($result);
?>

What should go in the marked segment to produce the following array output?

Array
{
 [0] => 1
 [1] => 2
 [2] => 4
 [3] => 8
 [4] => 16
 [5] => 32
 [6] => 64
 [7] => 128
 [8] => 256
 [9] => 512
}

foreach($result as $key => $val)

while($idx *= 2)

for($idx *= 2; STOP_AT >= $idx; $idx = 0)

while($idx < STOP_AT) do $idx *= 2

for($idx = 1; $idx < STOP_AT; $idx *= 2)

120/260

120.

What will be the output of the following PHP code ?

<?php
$x = 10;
$y = 20;
if ($x > $y && 1||1)
    print "hi" ;
else
    print "how are u";
?>

how are u

error

no output

121/260

121.

What is the output of this scrip?

<?php
define('A', 1);
const B = 2;
define('C', [A * A, B * B]);
echo(C[1]);

this will generate an error because you cannot use define() to declare an array constant.

this will generate an error because constants can only hold scalar values.

122/260

122.

What will the output of the following code be?

<?php
$a = range(3,9);
foreach ($a as $b) {
   switch($b) {
      case 3:
      $b = 7;
      case 7:
      $b = 3;
      default:
      // do nothing
   }
}
echo implode('-',$a);
?>

3-4-5-6-7-8-9-10-11

7-4-5-6-3-8-9

7-4-5-6-3-8-9-10-11

3-4-5-6-7-8-9

7-4-5-6-7-8-9

123/260

123.

What is the value of $a and $b after the function call?

<?php
    function doSomething( &$arg ) {
        $return = $arg;
        $arg += 1;
        return $return; 
    }
    $a = 3;
    $b = doSomething( $a );
?>

Both are 4

a is 4 and b is 3

a is 3 and b is 4

Both are 3

124/260

124.

Who is the father of PHP?

List Barely

Rasmus Lerdorf

Willam Makepiece

Drek Kolkevi

125/260

125.

What does PHP stand for?
i) Personal Home Page
ii) Hypertext Preprocessor
iii) Pretext Hypertext Processor
iv) Preprocessor Home Page

Both i) and ii)

Only ii)

Both i) and iii)

Both ii) and iv)

126/260

126.

Which is the right way of declaring a variable in PHP?
i) $3hello
ii) $_hello
iii) $this
iv) $This

Only ii)

Only iii)

ii), iii) and iv)

ii) and iv)

127/260

127.

What will be the output of the following PHP code ?

<?php
$x;
if ($x == 0)
    print "hi" ;
else
    print "how are u";
    print "hello"
?>

no output

how are uhello

hihello

128/260

128.

Consider the following PHP script:

<?php
function b($a = 4)
{
  $a = $a / 2;
  return $a;
}
$a = 10;
b($a);
echo $a;
?>

What will be the output?

The script will throw an error message.

129/260

129.

What is the output of this PHP code?

<?php
echo (isset($a)) ? "A is set" : "A is not set";
echo " and ";
echo (empty($b)) ? "B is not set" : "B is set";

Syntax error

A is not set and B is not set

A is set and B is set

A is not set and B is set

130/260

130.

What is displayed when the following script is executed?

<?php

 define(myvalue, "10");
 $myarray[10] = "Dog";
 $myarray[] = "Human"; 
$myarray['myvalue'] = "Cat";
 $myarray["Dog"] = "Cat";
 print "The value is: "; print $myarray[myvalue]."\n";

?>

Dog

The value is: Dog

The value is: Human

The value is: 10

The value is: Cat

131/260

131.

What will be the output of the following PHP code ?

<?php
$user = array("Ashley", "Bale", "Shrek", "Blank");
    for ($x=0; $x < count($user) - 1; $x++) 
    {
        if ($user[$x++] == "Shrek") 
            continue;
        printf ($user[$x]); 
    }
?>

Bale

AshleyBaleBlank

BaleBlank

AshleyShrek

132/260

132.

Which of the following equivalence operations evaluates to true if the two operands are not of the same data type or do not have the same value?

!==

===

133/260

133.

What is the output of the following line of code:

<?php
$a = 4 << 2 + 1;
echo $a;
?>

134/260

134.

What is the output of the following?

<?php
$a = 0xf2 + 0x09;
$b = $a >> 3;
echo $b;
?>

135/260

135.

Which of the following is NOT a valid PHP variable name?

$$a

$1a

$_a

136/260

136.

What will the output of this code be?

<?php
$result = echo print("Hello world!");
var_dump($result);

Hello world!NULL

syntax error

NULL

1NULL

137/260

137.

What is the result of the following bitwise operation in PHP?

1 ^ 2

138/260

138.

What will be the output of the following PHP code ?

<?php
$a = 1;
if (echo $a)
    print "True";
else
    print "False"; 
?>

false

true

1true

error

139/260

139.

What will be the output of the following PHP code ?

<?php
$i = 0;
do
{
    $i++;
}
while ($i < 3);
print $i;
?>

140/260

140.

Which of the following statements is/are FALSE regarding functions in PHP?

Functions in PHP cannot return expressions by reference.

Concept of void functions exists in PHP.

PHP can allow functions to return variables.

Return value of a function can be specified by using return keyword.

141/260

141.

What will be the output of the following PHP code ?

<?php
$var1 = 3;
print $var = ++$var;
?>

142/260

142.

What is the result when the following PHP code involving a boolean cast is executed?

<?php
 var_dump( (bool) 5.8 );
?>

bool(True)

bool(False)

143/260

143.

What is the output of the following code snippet?

<?php
$a = 20;
function myfunction($b) {
    $a = 30;
    global $a, $c;
    return $c = ($b + $a);
}
print myfunction(40) + $c;
?>

120

Syntax Error

140

144/260

144.

Consider the following code:

<?php
    $x=0;
    $i;
    for($i=0;$i<5;$i++)
    {
        $x+=$i;
    }
    print($x);
?>

What will be the value of x?

145/260

145.

Which statement will output $x on the screen?

echo "$x;";

echo "\$x";

echo "/$x";

echo "$$x";

146/260

146.

What will be the output of the following PHP code ?

<?php
for(;;)
{
   print "10";
}
?>

error

no output

infinite loop

147/260

147.

What is the output of the following script?

<?php
$arr1 = [1,2,3];
$arr2 = array("1" => 2, 0 => "1", 2 => 3 );
$equal = $arr1 == $arr2 ? 'Equal' : 'Not Equal';
$identical = $arr1 === $arr2 ? 'Identical' : 'Not Identical';
echo "The arrays are [$equal] and [$identical]";

Syntax error; this won't run

None of the above

The arrays are [Not Equal] and [Not Identical]

The arrays are [Equal] and [Not Identical]

The arrays are [Equal] and [Identical]

The arrays are [Not Equal] and [Identical]

148/260

148.

Which of the following is a magic constant?

$_GET

$_SERVER

__LINE__

$_POST

149/260

149.

You run the following PHP script:

<?php
    $a=12;
    $b=11;   
    $a>$b ? print($a) : print($b);
?>

The script will throw an error.

150/260

150.

Which of the following is used to set a constant?

set

con

define

new

151/260

151.

What is the output of the following PHP code?

<?php
    define('FOO', 10);
    $array = array(10 => FOO,"FOO" => 20);
    print $array[$array[FOO]] * $array["FOO"];
?>

200

FOO

100

152/260

152.

What is the difference between print() and echo()?

There's no difference: both functions print out some text!

echo() can be used as part of an expression, while print() can't

print() can be used as part of an expression, while echo() can't

echo() can be used in the CLI version of PHP, while print() can't

print() can be used in the CLI version of PHP, while echo() can't

153/260

153.

What will be the output of the following PHP code ?

<?php
define('IF', 42); 
echo "IF: ", IF;
?>

IF:

IF: 42

ERROR

42: 42

154/260

154.

How should we add a single line comment in our PHP code?
i) /?
ii) //
iii) #
iv) /* */

i), iii) and iv)

ii), iii) and iv)

Only ii)

Both ii) and iv)

155/260

155.

what will the following code produce?

define('CONSTANT', 1);
define('_CONSTANT', 0);
define('EMPTY', '');
if(!empty(EMPTY)){
    if(!((boolean) _CONSTANT)){
        print "One";
    }
}
else if(constant('CONSTANT') == 1){
    print "Two";
}

One

Two

Parse Error

156/260

156.

What will be the output of the following PHP code ?

<?php
$b = 1; $c = 4; $a = 5; 
$d = $b + $c == $a;
print $d;
?>

157/260

157.

What will be the output of the following PHP code ?

<?php
$a = 1;
if ($a--)
    print "True";
if ($a++)
    print "False"; 
?>

no output

false

error

true

158/260

158.

Which of the following is used to convert all applicable characters to HTML entities?

html_elements

html_entities

htmlelements

htmlentities

159/260

159.

What will this script output?

<?php

class MyException extends Exception {}
class ChildException extends MyException {}

try {
    throw new ChildException;
} catch (Exception $e) {
    echo "Caught Exception: " . get_class($e);
} catch (MyException $e) {
    echo "Caught MyException" . get_class($e);
}

Caught MyException: MyException

Caught Exception: ChildException

an error message related to an uncaught exception

Caught MyException: ChildException

160/260

160.

What will this code output?

<?php
$a = 1.23;
$b = 4.56;
$c = (int)$a + (int)$b;
echo (double)$c;

5.79

None of the above

161/260

161.

What will be the output of the following PHP code ?

<?php
if (print "hi" - 1)
    print "hello"
?>

hihello

Parse error

no output

162/260

162.

What will be the output of the following PHP code ?

<?php
class Constants
{
    define('MIN_VALUE', '0.0');  
    define('MAX_VALUE', '1.0');  
    public static function getMinValue()
    {
        return self::MIN_VALUE;
    }
    public static function getMaxValue()
    {
        return self::MAX_VALUE;
    }
}
echo Constants::getMinValue();
echo Constants::getMaxValue();
?>

0.01.0

ERROR

No output

163/260

163.

What will be the output of the following PHP code?

<?php
    $color = "maroon";
    $var = $color[2];
    echo "$var";
    ?>

$var

Error

164/260

164.

Which of the below statements is equivalent to $add += $add ?

$add = $add +$add

$add = $add + 1

$add = $add + $add + 1

$add = $add

165/260

165.

What will be the output of the following PHP code ?

<?php
$a = 2;
if ($a-- - --$a - $a)
    print "hello";
else
    print "hi";
?>

no output

hello

error

166/260

166.

Which of the following is NOT a valid PHP comparison operator?

<=>

167/260

167.

What will be the output of the following code snippet?

<?php
$a = 1;
$b = 2;
$c = 0xAF;
$d = $b + $c;
$e = $d * $b;
$f = ($d + $e) % $a;
print($f + $e);
?>

200

The script will throw an error message

354

168/260

168.

What will be the output of the following PHP code ?

<?php
$i = 0;
while ((--$i > ++$i) - 1)
{   
    print $i;
}
?>

error

no output

00000000000000000000....infinitely

-1-1-1-1-1-1-1-1-1-1....infinitely

169/260

169.

Which of the following is not valid PHP code?

$_10

$aVaR

$10_somethings

${"MyVar"}

&$something

170/260

170.

What will be the output of the following PHP code ?

<?php
define("VAR_NAME","test"); 
${VAR_NAME} = "value"; 
echo VAR_NAME;
echo ${VAR_NAME}; 
?>

testtest

testvalue

error, constant value cannot be changed

test

171/260

171.

Which of the below provided options is correct regarding the below code?

<?php 
    $a = array (1, 2, 3);
    $b = array (1 => 2, 2 => 3, 0 => 1); 
    $c = array ('a' => 1, 'b' => 2, 'c' => 3);
    var_dump ($a == $b); 
    var_dump ($a === $b); 
    var_dump ($a == $c); 
?>

true true false

false true true

true false false

true false true

172/260

172.

You run the following PHP script:

<?php
    $sale = 200;
    $sale = $sale- + 1;
    echo $sale;
?>

What will be the output?

202

201

200

199

173/260

173.

What will be the output of the following PHP code ?

<?php
$i = 0;
$j = 0;
if ($i && ($j = $i + 10)) {
    echo "true";
}
echo $j;
?>

true10

true0

174/260

174.

Under what circumstance is it impossible to assign a default value to a parameter while declaring a function?

When the function contains only one parameter

When the function is being declared as a member of a class

When the parameter is Boolean

When the parameter is being declared as passed by reference

175/260

175.

Which of the below symbols is a newline character?

176/260

176.

Which of the conditional statements is/are supported by PHP?
i) if statements
ii) if-else statements
iii) if-elseif statements
iv) switch statements

ii), iii) and iv)

Only i)

i), ii), iii) and iv)

i), ii) and iv)

177/260

177.

What is the output of the following code:

<?php
function a($a) {
   echo $a . "&";
}
function b($a) {
   echo "-" . $a;
}
$a = "!";
$b = &$a;
echo a(b($b));
?>

!&-&

!&-!

-&!

-!&

-!!&

178/260

178.

Which language construct can best represent the following series of if conditionals?

<?php
    if($a == 'a') {
        somefunction();
    } else if ($a == 'b') {
        anotherfunction();
    } else if ($a == 'c') {
        dosomething();
    } else {
        donothing();
    }
?>

A recursive function call

A while statement

A switch statement using a default case

A switch statement without a default case

It is the only representation of this logic

179/260

179.

42 with two decimal places?

printf("%1.2f\n", 42);

printf("%.2d\n", 42);

180/260

180.

What is the order of parameters in the mail() function?

to address, subject, body, extra headers

subject, to address, extra headers, body

subject, to address, body, extra headers

to address, subject, extra headers, body

181/260

181.

What will be the output of the following PHP code ?

<?php
    echo "This","was"|"a","bad"."idea";
?>

Thiswas a badidea

Thiswasabadidea

Thiswas abadidea

Thiswasbadidea

182/260

182.

What will be the output of the following PHP code ?

<?php
print_r "Hello world"
?>

Nothing

Parse Error

Missing semicolon error

Hello World

183/260

183.

What is the best way to iterate through the $myarray array, assuming you want to modify the value of each element as you do?

<?php
    $myarray = array ("My String", "Another String", "Hi, Mom!");
?>

Using a for loop

Using a do...while loop

Using a while loop

There is no way to accomplish this goal

Using a foreach loop

184/260

184.

which one of these variables has illegal name?

None of them

$my_Var

$my-Var

$myVar

185/260

185.

What will be the output of the following PHP code ?

<?php
    $one = "Hello";
    $two = "World";
    echo "$one"+"$two";
?>

Error

Hello+World

HelloWorld

186/260

186.

In which of the following ways does the identity operator === compare two values?

If the two values are strings, it performs a lexical comparison.

It evaluates to true only if the operands are of the same data type and have the same value.

It is an alias of strcmp() function.

It evaluates to true if the two operands are equivalent.

187/260

187.

What will be the output of the following PHP code ?

<?php
$y = 2;
if ($y-- == ++$y)
{
    echo $y;
}
?>

no output

188/260

188.

What will be the output of the following PHP code ?

<?php
$a  =  '12345';
echo "qwe$arty";
?>

qwe

qwe12345rty

qwe$arty

error

189/260

189.

What is the return value of echo statement in PHP?

none of these

no return value

190/260

190.

What will be the output of the following PHP code ?

<?php
$i = 2;
while (++$i)
{   
    while (--$i > 0)
        print $i;
}
?>

no output

infinite loop

210

191/260

191.

What will be the output of the following PHP code ?

<?php
$on$e = 1;
$tw$o = 2;
$thre$e = 3;
$fou$r = 4;
echo "$on$e / $tw$o + $thre$e / $fou$r"; 
?>

1.25

0.75

0.05

Error

192/260

192.

Which of the following are valid PHP variables?

@$foo

$0x0

${0x0}

&$variable

193/260

193.

You run the following script:

<?
    10 = $a;
    echo $a;
?>

Script will output an error.

194/260

194.

Which of the following is a valid namespace operator in PHP?

195/260

195.

What will be the output of the following PHP code ?

<?php
$var1 = 1 + ++5;
echo $var1; 
?>

no output

error

196/260

196.

Run-time inclusion of a PHP script is performed using the ____ construct, while compile-time inclusion of PHP scripts is performed using the ____ construct.

require, include

All of the above are correct

require_once, include

include_once, include

include, require

197/260

197.

What gets printed?

<?php

$RESULT = 11 + 011 + 0x11;

echo "$RESULT";

?>

198/260

198.

You run the following PHP script:

<? 
    $a = "b";
    $b = 20;
    echo $$a;
?>

What will be the output?

Script will show an error.

199/260

199.

What will be the output of the following PHP code ?

<?php
if (print "0")
    print "hi" ;
else
    print "how are u";
?>

0how are u

how are u

0hi

200/260

200.

What will be the output of the following PHP code ?

<?php
$i = 0; $j = 1; $k = 2;
print !(($i + $k) < ($j - $k));
?>

false

true

201/260

201.

What will be the output of the following PHP code ?

<?php
$x;
for ($x = -3; $x < -5; ++$x)
{
    print ++$x;
}
?>

-3-4

infinite loop

-3-4-5

no output

202/260

202.

What will be the output of the following PHP code ?

<?php
for ($i = 0;$i = -1;$i = 1)
{
    print $i;
    if ($i != 1) 
    break;
}
?>

infinite loop

-1

203/260

203.

What will be the output of the following PHP code ?

<?php
$auth = 1;
$status = 1;
if ($result = (($auth == 1) && ($status != 0)))
{
    print "result is $result";
}
?>

result is true

no output

error

result is 1

204/260

204.

What is the output of this script?

<?php
$a = 0b0010;
$b = 0b0001;
echo gettype($a & $b);

boolean

double

integer

Syntax error; this won’t run

205/260

205.

What will be the output of the following PHP code ?

<?php
for ($count = 1; $count < 20; $count++);
    print $count;
?>

12345678910....19

12345678910....1920

206/260

206.

What will be the output of the following PHP code ?

<?php
$x = 1;
$y = 2;
if (++$x == $y++)
{
    echo "true ", $y, $x;
}
?>

true 32

true 22

true 33

no output

207/260

207.

How does the identity operator === compare two values?

If the two values are strings, it performs a lexical comparison

It converts them to a common compatible data type and then compares the resulting values

It bases its comparison on the C strcmp function exclusively

It returns True only if they are both of the same type and value

208/260

208.

Which of the following operators has the highest precedence order?

[

209/260

209.

What will be the output of the following PHP code ?

<?php
$a = 10;
if (1) 
    print "all";
else 
    print "some"
else 
    print "none";
?>

all

Parse error: syntax error

none

some

210/260

210.

What will this script output?

echo "Apples"<=>"bananas" ? 'foo' : 'bar';

None of the above

bar

foo

211/260

211.

Which of the following options is NOT as valid tag for PHP 7.1 script?

<?php ... ?>

<% ... %>

<?= ... ?>

<? .. ?>

212/260

212.

What will be the output of the following PHP code ?

<?php
$i=0;
for (1; $i == 1; $i = 2)
    print "In for loop ";
print "After loop\n";
?>

In for loop

In for loopAfter for loop

After for loop

Infinite loop

213/260

213.

What will be the output of the following PHP code ?

<?php
if (0.0)
    print "hi" ;
else
    print "how are u";
?>

error

how are u

no output

214/260

214.

Which of the following logical operators is an equivalence logical operator?

===

!==

215/260

215.

what is the name of the error level constant that is used to designate PHP code that will not work in future versions?

216/260

216.

What is the output of the following code?

<?php
$a = 1;
function calculate() {
   global $a;
   $a += 7;
   $a = $a * 043;
   return --$a;
}
echo $a;
?>

343

342

279

217/260

217.

How can we create a unique random password in PHP?

echo md5(uniqid(rand(), true));

echo pass(uniqid(rand(), true));

echo md5(pass(rand(), true));

echo (pass(rand(), true));

218/260

218.

Assume that today is January 8th, 2013, 5:16:18 pm in MST time zone.

<?php
        echo date('l \t\h\e jS');
?>

January 8, 2013, 5:16 pm

01.08.13

it is the 8th day

Tuesday the 8th

219/260

219.

What will be the output of the following code?

<?php
    function track() {
         static $count = 0;
         $count++;
         echo $count;
    }
    track();
    track();
    track();
?>

000

123

011

111

220/260

220.

What will the following script output?

$array = '0123456789ABCDEFG';
$s = '';
for ($i = 1; $i < 50; $i++) {
    $s .= $array[rand(0,strlen ($array) - 1)];
}
echo $s;

A string of 49 copies of the same character, because the random number generator has not been initialized

A string of 49 'G' characters

Nothing, because $array is not an array

A string of 49 random characters

A string of 50 random characters

221/260

221.

Fred works as a Web developer in Fastech Inc. He writes the following script:

<?php
    $s = 2;
    switch ($s) {
      case 1:
         print("Fred");
         break;
      case 2:
         print("Fast");
      case 3:
         print("Tech");
      default: print("default");
    }
?>

What will be displayed as output when Fred attempts to run this PHP script?

Fast Tech

FastTechdefault

default

Fast

222/260

222.

Consider the following script:

<html>
<head>
<title>
       This is a test script.
</title>
</head>
<body>
<?php
    echo 'This is some sample text';
?>
</body>
</html>

Which of the following tags is used in the php script?

Script tag

Short tag

Standard tag

ASP tag

223/260

223.

What will be the output of the following PHP code ?

<?php
$y = 2;
if (**$y == 4)
{
    echo $y;
}
?>

no output

error at line 3

224/260

224.

What will be the output of the following PHP code ?

<?php
$b = 3;
switch($b)
{
case 2:
    print "hello";
    break;
case 1:
    print "hi";
    break;
}
?>

no output

hello

error

225/260

225.

You run the following PHP script:

<?php
for($x = 1; $x <= 2; $x++){
      for($y = 1; $y <= 3; $y++){
         if ($x == $y) continue; 
         print("x = $x  y =  $y");
      }
   }
?>

What will be the output? Each correct answer represents a complete solution. Choose all that apply.

x = 1 y = 2

x = 1 y = 1

x = 2 y = 1

x = 2 y = 2

x = 1 y = 3

x = 2 y = 3

226/260

226.

What will be the output of the following PHP code ?

<?php
$i = 5;
while (--$i > 0 || ++$i)
{   
    print $i;
}
?>

54321

54321111111.....infinitely

555555555....infinitely

227/260

227.

Mark works as a Web Application Developer for Blue Solutions Inc. He writes the following code:

<?php
    $x =25;
    while($x<10)
    {
        $x--;
    }
    print ($x); 
?>

What will be the output when Mark tries to compile and execute the code?

The script will throw an error message.

228/260

228.

Consider the following code:

<?php   
    $a=5;
    $b=12;
    $c=10;
    $d=7;
    $e=($a*$b)+$c*$d/$a;
    print($e);
?>

What will be the output of the above code?

154

130

229/260

229.

What will be the output of the following PHP code ?

<?php
$x = 1;
if ($x--)
    print "hi"
    $x--;
else
    print "hello"
?>

hello

no output

error

230/260

230.

What will be the output of the following PHP code ?

<?php
    echo "This", "was", "a", "bad", "idea";
?>

Error

This, was, a, bad, idea

Thiswasabadidea

This was a bad idea

231/260

231.

Which of the following are the core extensions? Each correct answer represents a complete solution. Choose all that apply.

Classes

PECL

Arrays

Objects

232/260

232.

What will be the output of the following PHP code ?

<?php
$a = 12;
--$a;
echo $a++;
?>

error

233/260

233.

Mark works as a Web Developer for Unicorn Inc. He develops an application in PHP using the following code:

<?php
      switch(1) {
      case 1: print("Book Details"); 
      case 2: print("Book Author"); 
      default: print("Missing Book");
      }
?>

What will be the output of the script?

Book Author

Missing Book

It will display all the three lines.

The script will throw an error.

Book Details

234/260

234.

What is the output of the following PHP script?

    $a = 1;
    $b = 2.5;
    $c = 0xFF;
    $d = $b + $c;
    $e = $d * $b;
    $f = ($d + $e) % $a;
    echo ($f + $e);

432.75

643

432

643.75

257

235/260

235.

You work as a Web Developer for Remote Inc. What will be the output when you try to run the script below?

<?php
    $b = false;
    if($b = true)
      print("true");
    else
      print("false");
?>

The script will throw an error message.

true

true false

false

236/260

236.

What is the output of following code?

   $a = 1;
   ++$a;
    $a *= $a;
    echo $a--

237/260

237.

What will be the output of the following PHP code?

<?php
$x;
if ($x)
    print "hi" ;
else
    print "how are u";
?>

no output

how are u

error

238/260

238.

What is the difference between isset() and other is_*() functions (is_alpha(), is_number(), etc.)?

isset() is a language construct and is_*() are not language constructs

isset() is a function call and is_*() are not function calls

is_*() are language constructs and isset() is not a language construct

is_*() return a value whereas isset() does not

239/260

239.

What is the value of $x in the following code snippet?

<?php
$x = 123 == 0123;
?>

123

NULL

TRUE

FALSE

240/260

240.

Which of the following options is/are correct regarding variable scopes in PHP?

global, script and function

global, function and class

script, function and class

class, global and script

241/260

241.

What will be the output of the following PHP code ?

<?php
$x=1;
echo $x-- != ++$x;
?>

error

no output

242/260

242.

Which of the following will you use to iterate a PHP associative array?

while

for

foreach

for in

243/260

243.

What should be the correct syntax to write a PHP code?

< ? php ?>

<?php ?>

< php >

<? ?>

244/260

244.

What is the output from this script?

<?php
$a = true;
$b = false;
$ampBool = $a && $b;
$andBool = $a and $b;
var_dump($ampBool == $andBool);
?>

bool(false)

bool(true)

245/260

245.

Which of the following gives a string containing PHP script file name in which it is called?

$_SESSION

$_COOKIE

$php_errormsg

$_SERVER['PHP_SELF']

246/260

246.

The ____ operator returns True if either of its operands can be evaluated as True, but not both.

247/260

247.

You run the following PHP script:

<? 
    echo (int) "Jason 1235"; 
?>

What will be the output?

1235

It will throw a script error.

Jason

248/260

248.

You run the following PHP script:

<php
     echo 0x33, ' birds sit on ', 022, ' trees.';
?>

What will be the output?

51 birds sit on trees.

51 birds sit on 0 trees.

51 birds sit on 22 trees.

51 birds sit on 18 trees.

249/260

249.

What will be the output of the following PHP code ?

<?php
$var1 = 1;
echo $var1 = ++$var1 % 2 + ++$var1; 
?>

250/260

250.

You have been given a code snippet as follows:

$somearray = array("hi", "this is a string", "this is a code");

You want to iterate this array and modify the value of each of its elements. Which of the following is the best possible to accomplish the task?

For loop

Do while loop

Foreach loop

While loop

251/260

251.

Which of the following statements explains the difference between print() and echo()?

There is no difference between echo() and print() functions.

You can use print() as part of an expression while you cannot use echo().

You can use print() to print numbers while you cannot use echo for this.

You cannot use echo() with bitwise operators but you can use print() for this.

252/260

252.

What will be the output of the following PHP code ?

<?php
    define('GREETING_TEST', 'PHP is a scripting language', true);
    echo GREETING_TESt;
    $changing_variable = 'test';
    echo constant('GREETING_' . strtoupper($changing_variable));
?>

GREETING_TESt

PHP is a scripting language

PHP is a scripting language GREETING_TEST

PHP is a scripting language PHP is a scripting language

253/260

253.

What will be the output of the following PHP code ?

<?php
$x = 10;
$y = 4;
$z = 3;
echo $x % $y % $z;
?>

error

254/260

254.

How do we access the value of 'd' later?

$a = array(
    'a',
    3 => 'b',
    1 => 'c',
    'd'
);

$a[4]

$a[2]

$a[0]

$a[1]

$a[3]

255/260

255.

What will this code output?

    namespace A;
    function Hello() { echo __NAMESPACE__; }
    namespace B;
    function Hello() { echo __NAMESPACE__; }
    namespace C;
    \B\Hello();

This produces an error; functions cannot be namespaced

256/260

256.

What will be the output of the following code -

    $Rent = 250;   
    function Expenses($Other) { 
        $Rent = 250 + $Other; 
        return $Rent; 
    }  
    Expenses(50);   
    echo $Rent;

300

Error

250

200

257/260

257.

You run the following PHP script:

<? 
    $a=20%-8;
    echo $a;
?>

-2

Script will show an error message.

-4

258/260

258.

Which of the following are valid constant names? (Choose three)

YU-8

ablwesc_99

R7yu

AEN

8rutil

111

9tur8UH4

259/260

259.

What will be the output of the following PHP code ?

<?php
for ($x = 0; $x <= 10; print ++$x)
{
    print ++$x;
}
?>

infinite loop

12345678910

123456789101112

1234567891011

260/260

260.

What will be the output of the following PHP code ?

<?php
$i = 0;
while ($i++)
{
    print $i;
}
print $i;
?>

infinite loop