Zend Preparation | Online PHP Quiz

PHP Basics singleQuestion

1/260

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

All of the above are correct

require, include

require_once, include

include_once, include

include, require

2/260

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

i), ii), iii) and iv)

i), ii) and iv)

ii), iii) and iv)

Only i)

3/260

Which of the following is used to set a constant?

new

define

set

con

4/260

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

5/260

You run the following PHP script:

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

What will be the output?

syntax error

123

-123

6/260

How can we create a unique random password in PHP?

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

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

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

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

7/260

What will be the output of the following PHP code ?


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

no output

0x6dc0

error

1797568

8/260

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

html_entities

htmlentities

htmlelements

html_elements

9/260

How to use header() function in PHP correctly?

None of these

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

header("Location: newpage.php");

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

10/260

10.

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

Only iii)

ii), iii) and iv)

Only ii)

ii) and iv)

11/260

11.

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.

12/260

12.

What is the output of the following line of code:

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

13/260

13.

What is the return value of echo statement in PHP?

no return value

none of these

14/260

14.

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

Strings

Resources

Objects

Arrays

15/260

15.

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

$2var

$__var

$_2var

$var

16/260

16.

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

$add = $add +$add

$add = $add + $add + 1

$add = $add

$add = $add + 1

17/260

17.

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;
?>

242.0

128

256

342

18/260

18.

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

subject, to address, body, extra headers

to address, subject, body, extra headers

subject, to address, extra headers, body

to address, subject, extra headers, body

19/260

19.

Who is the father of PHP?

Rasmus Lerdorf

Willam Makepiece

Drek Kolkevi

List Barely

20/260

20.

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

NULL

Strings

Booleans

Doubles

21/260

21.

What will be the output of the following PHP code ?

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

01234

012345

0123

error

22/260

22.

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");
?>

true false

The script will throw an error message.

true

false

23/260

23.

What gets printed?

<?php

$RESULT = 11 + 011 + 0x11;

echo "$RESULT";

?>

24/260

24.

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 )

25/260

25.

What will be the output of the following PHP code ?

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

false

true

no output

error

26/260

26.

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"; 
?>

0.75

0.05

1.25

Error

27/260

27.

What will be the output of the following PHP code ?

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

true0

true10

28/260

28.

What will this script output?

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

foo

Hello world

Syntax error; this won’t run

bar

29/260

29.

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

i), iii) and iv)

ii), iii) and iv)

Both ii) and iv)

Only ii)

30/260

30.

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

PHP does not output anything.

PHP will start displaying the value of current object.

PHP will start displaying the value of last object.

none of these.

31/260

31.

Which of the following is a magic constant?

$_GET

$_POST

$_SERVER

__LINE__

32/260

32.

which one of these variables has illegal name?

$my-Var

$my_Var

None of them

$myVar

33/260

33.

Which of the following operators has the highest precedence order?

[

34/260

34.

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.

35/260

35.

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;
}
?>

0 1 2 3 4 5

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

infinite loop

36/260

36.

What will be the output of the following PHP code ?

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

error

37/260

37.

What will be the output of the following PHP code ?

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

nothing

error

true

false

38/260

38.

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.

Embedded, Zend, Docbook, MySQL

Embedded, Zend, HTML, XML

Zend-based, PHP, Image, HTML

Dynamic, PHP, Database, HTML

Perl-based, PHP, Web, Static

39/260

39.

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 while loop

Using a for loop

Using a do...while loop

There is no way to accomplish this goal

Using a foreach loop

40/260

40.

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?

Foreach loop

For loop

While loop

Do while loop

41/260

41.

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

42/260

42.

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

for in

for

while

foreach

43/260

43.

What will be the output of the following PHP code ?

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

44/260

44.

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.";
    }
}
?>

True, True, False

False, True, True

False, True, False

True, True, True

False, False, True

45/260

45.

What will be the output of the following PHP code ?

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

false

error

true

46/260

46.

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

<? .. ?>

<?= ... ?>

<?php ... ?>

<% ... %>

47/260

47.

What will be the output of the following PHP code ?

<?php
print_r "Hello world"
?>

Missing semicolon error

Nothing

Hello World

Parse Error

48/260

48.

What will be the output of the following PHP code ?

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

54321111111.....infinitely

54321

555555555....infinitely

49/260

49.

What will be the output of the following PHP code ?

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

false

true

50/260

50.

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

51/260

51.

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

52/260

52.

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 Bob Bob

My name is BobBob

My name is BobMy name is Bob

Error

53/260

53.

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

54/260

54.

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

55/260

55.

What will be the output of the following PHP code ?

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

80.5

56/260

56.

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";
}

True

Syntax error; this won’t run

False

57/260

57.

What will be the output of the following PHP code ?

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

error

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

00000000000000000000....infinitely

no output

58/260

58.

What is the output of this script?

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

-1

59/260

59.

What will be the output of the following PHP code ?

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

infinite loop

60/260

60.

What is the output of this script?

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

61/260

61.

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

===

!==

62/260

62.

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 1

result is true

no output

error

63/260

63.

What is the output of this script?

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

boolean

integer

Syntax error; this won’t run

double

64/260

64.

Which of the following is NOT a strongly typed language?

PHP

C++

JAVA

65/260

65.

What will be the output of the following PHP code ?

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

no output

66/260

66.

What will be the output of the following PHP code ?

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

some

all

none

Parse error: syntax error

67/260

67.

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"];
?>

FOO

100

200

68/260

68.

What will this code output?

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

This produces an error; functions and closures cannot be namespaced

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

69/260

69.

What will be the output of the following PHP code ?

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

70/260

70.

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*

*foo

Foo

foo:*1023

71/260

71.

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

72/260

72.

What will be the output of the following PHP code?

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

how are u

error

no output

73/260

73.

Which of the following are valid PHP variables?

&$variable

@$foo

${0x0}

$0x0

74/260

74.

Which version of PHP introduced Try/catch Exception?

PHP 4

PHP 6

PHP 5 and later

PHP 5

75/260

75.

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

$$a

$_a

$1a

76/260

76.

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

None of the above; these are all fine

<?php

77/260

77.

What will be the output of the following PHP code ?

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

error

no output

myObject::CONSTANT

test

78/260

78.

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

79/260

79.

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

Classes

Objects

PECL

Arrays

80/260

80.

What will be the output of the following PHP code ?

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

error

false

1true

true

81/260

81.

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

82/260

82.

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?

The last value of the variable $i: 49

The last value of the variable $i:

Script will throw an notice.

The last value of the variable $i: 50

83/260

83.

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

Byte code caching

Variable

Constant

Namespace

84/260

84.

You run the following script:

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

Script will output an error.

85/260

85.

What is the output of the following code?

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

279

342

343

86/260

86.

What will be the output of the following PHP code ?

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

true20

true0

87/260

87.

The PHP syntax is most similar to:

VBScript

Perl and C

JavaScript

88/260

88.

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]); 
    }
?>

AshleyBaleBlank

AshleyShrek

Bale

BaleBlank

89/260

89.

What will be the output of the following PHP code ?

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

42: 42

IF: 42

ERROR

IF:

90/260

90.

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 switch statement without a default case

A recursive function call

It is the only representation of this logic

A switch statement using a default case

A while statement

91/260

91.

What will be the output of the following PHP code ?

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

hellolength

error

92/260

92.

What will be the output of the following PHP code ?

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

infinite loop

-3-4

-3-4-5

no output

93/260

93.

What will be the output of the following PHP code ?

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

no output

Parse error

hihello

94/260

94.

What will the code output?

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

An error will occur

95/260

95.

What will be the output of the following PHP code ?

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

infinite loop

no output

210

96/260

96.

What will be the output of the following PHP code ?

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

__LINE__

PHP is a scripting language

ERROR

97/260

97.

What is the output of the following?

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

98/260

98.

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

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

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

99/260

99.

What will be the output of the following PHP code ?

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

hihello

no output

how are uhello

100/260

100.

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

no output

error

101/260

101.

What will be the output of the following PHP code ?

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

Thiswas a badidea

Thiswas abadidea

Thiswasbadidea

Thiswasabadidea

102/260

102.

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 */
?>

function is_leap($year)

function is_leap($year = 2000)

function is_leap(2000 = $year)

is_leap($year default 2000)

function is_leap($year default 2000)

103/260

103.

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;
?>

104/260

104.

What will this code output?

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

None of the above

5.79

105/260

105.

What will be the output of the following PHP code ?

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

Undefined variable: GREETING

$GREETING

no output

PHP is a scripting language

106/260

106.

What will be the output of the following PHP code ?

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

error

hello

no output

107/260

107.

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);

643

257

643.75

432

432.75

108/260

108.

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);
?>

The script will throw an error message

200

354

109/260

109.

What will be the output of the following PHP code ?

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

no output

error

infinite loop

110/260

110.

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 = 3

x = 2 y = 1

x = 1 y = 2

x = 2 y = 2

x = 1 y = 1

x = 2 y = 3

111/260

111.

What is the output of following code?

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

112/260

112.

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

get_loaded_extensions

phpinfo()

extension_loaded()

get_extension_funcs()

113/260

113.

What will be the output of the following PHP code ?

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

12345678910

1234567891011

infinite loop

123456789101112

114/260

114.

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";

A is not set and B is set

Syntax error

A is not set and B is not set

A is set and B is set

115/260

115.

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();
?>

there is no output

goodthingsmanygoodthings

manygoodthingsmanygoodthings

manygoodthings

goodthingsgoodthings

116/260

116.

What will be the output of the following PHP code ?

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

infinite loop

error

no output

117/260

117.

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

$_SESSION

$_SERVER['PHP_SELF']

$_COOKIE

$php_errormsg

118/260

118.

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 1 to 100 will be printed.

A series from 51 to 100 will be printed.

A series from 1 to 50 will be printed.

119/260

119.

How can a script come to a clean termination?

When the execution reaches the end of the current file

When PHP crashes

When exit() is called

When Apache terminates because of a system problem

120/260

120.

What is the output of the following PHP code?

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

FOO

100

200

121/260

121.

What will be the output of the following PHP code ?

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

Hello <html> Hello world </html>

Hello world

Syntax Error

Hello World Hello World

122/260

122.

What will be the output of the following PHP code ?

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

error

no output

123/260

123.

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=5

x=5, y=15

x=10, y=5

x=15, y=10

124/260

124.

What will be the output of the following PHP code ?

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

error

125/260

125.

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

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

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

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

It bases its comparison on the C strcmp function exclusively

126/260

126.

What will be the output of the following PHP code ?

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

11121213

11111213

11111112

11111212

127/260

127.

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.

128/260

128.

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

hihello

Parse error

129/260

129.

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

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

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

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

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

130/260

130.

You run the following PHP script:

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

The script will throw an error.

131/260

131.

What will be the output of the following PHP code ?

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

error

one

onetwo

one, two

132/260

132.

What is the output of the following line of code?

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

117

115

133/260

133.

What will be the output of the following PHP code ?

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

12345678910....1920

12345678910....19

134/260

134.

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++;
?>

error

869

368

742

135/260

135.

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;
?>

140

120

Syntax Error

136/260

136.

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";
}

300

1600

dhaka

986.962699801

137/260

137.

What will be the output of the following PHP code ?

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

red red

error

red

nothing

138/260

138.

You run the following PHP script:

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

What will be the output?

1235

It will throw a script error.

Jason

139/260

139.

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.

140/260

140.

What will be the output of the following PHP code ?

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

hihihihi

hihihi

hihi

141/260

141.

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] => 5 [1] => 7 [2] => 9 )

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

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

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

142/260

142.

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 loopAfter for loop

In for loop

Infinite loop

After for loop

143/260

143.

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";
}

Two

Parse Error

One

144/260

144.

What will be the output of the following PHP code ?

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

no output

145/260

145.

What will be the output of the following PHP code ?

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

146/260

146.

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";

?>

The value is: Human

Dog

The value is: Dog

The value is: Cat

The value is: 10

147/260

147.

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

Both ii) and iv)

Only ii)

Both i) and ii)

Both i) and iii)

148/260

148.

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 myapp\utils\hello\world;

use utils\hello

use hello

use mayapp\utils\hello

149/260

149.

You run the following PHP script:

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

What will be the output?

Script will show an error.

150/260

150.

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.

151/260

151.

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?

Date out of range error

Jan-01-1996

Jan-01-1995

Fatal error

152/260

152.

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
}

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

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

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

while($idx *= 2)

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

153/260

153.

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 random characters

A string of 49 'G' characters

A string of 50 random characters

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

Nothing, because $array is not an array

154/260

154.

What will be the output of the following PHP code ?

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

hello

error

hihello

infinite loop

155/260

155.

Which statement will output $x on the screen?

echo "\$x";

echo "/$x";

echo "$x;";

echo "$$x";

156/260

156.

What will be the output of the following PHP code?

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

25 students

35 students

Error

157/260

157.

What will be the output of the following PHP code ?

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

error

no output

hello

158/260

158.

Which of the following are valid identifiers (Choose 3)

$1 = "Hello";

function object() { }

function _4You() { }

$_1 = "Hello World";

function 4You() { }

159/260

159.

You run the following PHP script:

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

What will be the output?

200

199

201

202

160/260

160.

What will be the output of the following PHP code ?

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

infinite loop

no output

210

161/260

161.

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";
    }
?>

Error

I love arsenalI love manc

I love arsenalI love mancI love manu

I love arsenal

162/260

162.

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.

163/260

163.

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 once, hello 8 times

Hi is printed 8 times, hello 8 times

Hi is printed 8 times

hello printed 8 times

164/260

164.

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));
?>

PHP is a scripting language GREETING_TEST

PHP is a scripting language PHP is a scripting language

PHP is a scripting language

GREETING_TESt

165/260

165.

What will be the output of the following PHP code?

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

1234

Error

166/260

166.

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

167/260

167.

What will be the output of the following PHP code ?

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

no output

Fatal error

168/260

168.

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));
?>

-!&

!&-!

-&!

-!!&

!&-&

169/260

169.

You run the following script:

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

What will be the output?

170/260

170.

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);
}

an error message related to an uncaught exception

Caught MyException: MyException

Caught Exception: ChildException

Caught MyException: ChildException

171/260

171.

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?

172/260

172.

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

1 ^ 2

173/260

173.

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";
?>

no output

error

hello

174/260

174.

What will be the output of the following PHP code ?

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

error at line 3

no output

175/260

175.

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

128

512

176/260

176.

What will be the output of the following PHP code?

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

1+2

1.+.2

Error

177/260

177.

What will be the output of the following PHP code ?

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

testvalue

error, constant value cannot be changed

test

testtest

178/260

178.

What will be the output of the following PHP code ?

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

error

qwe

qwe$arty

qwe12345rty

179/260

179.

You run the following PHP script:

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

What will be the output?

1235Jason

It will throw a script error.

1235

180/260

180.

What will be the output of the following PHP code ?

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

no output

181/260

181.

What will this script output?

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

bar

None of the above

foo

182/260

182.

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);
?>

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

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

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

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

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

183/260

183.

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 false true

false true true

true true false

true false false

184/260

184.

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?

Short tag

ASP tag

Standard tag

Script tag

185/260

185.

What will this script output?

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

Hello world

Hello

an error message because the variable b is not defined

Nothing; it won't run

186/260

186.

What will be the output of the following code -

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

200

Error

300

250

187/260

187.

You run the following PHP script:

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

-2

-4

Script will show an error message.

188/260

188.

What will be the output of the following code?

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

000

011

123

111

189/260

189.

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

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

$string = get_function_args();

$string = $argv[1];

list($string) = func_get_args();

$string = $_ARGV[0];

190/260

190.

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);
}
?>

Loops infinitely.

Determines if they are both even or odd.

Determines the greatest common divisor between them.

Switches the values of $p and $q.

191/260

191.

What will be the output of the following PHP code ?

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

Thiswasabadidea

Error

This, was, a, bad, idea

This was a bad idea

192/260

192.

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

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

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

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

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

193/260

193.

What will be the output of the following PHP code ?

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

194/260

194.

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

class, global and script

global, function and class

global, script and function

script, function and class

195/260

195.

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

default

FastTechdefault

Fast Tech

196/260

196.

What will the output of this code be?

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

NULL

1NULL

Hello world!NULL

syntax error

197/260

197.

What will be the output of the following PHP code ?

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

0how are u

0hi

how are u

198/260

198.

What is the output of:

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

2110elephpant

1210elephpant

10elephpant

199/260

199.

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?

14345

12365

-2177424000

200/260

200.

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

<=>

201/260

201.

You run the following PHP script:

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

What will be the output?

51 birds sit on 18 trees.

51 birds sit on 0 trees.

51 birds sit on trees.

51 birds sit on 22 trees.

202/260

202.

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

203/260

203.

What will be the output of the following PHP code ?

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

nothing

onetwo

one

error

204/260

204.

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

$a <<= 2;

$a >>= 2;

$a += $a + $a;

$a *= pow (2, 2);

205/260

205.

You run the following script:

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

What will be the output?

integer

string

Script will through an error.

boolean

206/260

206.

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

< php >

< ? php ?>

<? ?>

<?php ?>

207/260

207.

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();
}

None of the above

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

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

Exception caught in A

208/260

208.

What will be the output of the following PHP code ?

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

HelloWorld

Error

Hello+World

209/260

209.

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();
}

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

Exception caught in A

None of the above

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

210/260

210.

Which of the following functions returns current Unix timestamp?

date()

localtime()

time()

strtotime()

211/260

211.

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?

!==

===

212/260

212.

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

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

Tuesday the 8th

it is the 8th day

01.08.13

January 8, 2013, 5:16 pm

213/260

213.

What will be the output of the following PHP code ?

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

Error

red

\red

$color

214/260

214.

What will the output of this function be?

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

None of the above

1.234,57

1,235

1,234.568

215/260

215.

What will be the output of the following PHP code ?

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

hihihihi

hihi

hihihi

216/260

216.

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). ',';
    }
?>

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

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

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

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

217/260

217.

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?

You didn’t optimize your code design properly.

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.

218/260

218.

What is the output of this script?

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

apples

-1

219/260

219.

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

yes

220/260

220.

Which of the below symbols is a newline character?

221/260

221.

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

Require constructs can't be used with URL filenames'

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

222/260

222.

What will be the output of the following PHP code?

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

$var

Error

223/260

223.

What will be the output of the following PHP code ?

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

Error

echo Hello world

Hello world

echo 'Hello world'

224/260

224.

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

225/260

225.

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

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

FALSE

NULL

TRUE

123

226/260

226.

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();
?>

No output

0.01.0

ERROR

227/260

227.

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";
}
?>

hello

hihello

hihellohi1

228/260

228.

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

229/260

229.

What is the output from this script?

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

bool(true)

bool(false)

230/260

230.

What will be the output of the following PHP code ?

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

no output

error

231/260

231.

Which of the following is NOT a magic predefined constant?

__FILE__

__DATE__

__METHOD__

__LINE__

__CLASS__

232/260

232.

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

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

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

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

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

233/260

233.

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

234/260

234.

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]";

The arrays are [Equal] and [Identical]

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

The arrays are [Equal] and [Not Identical]

None of the above

The arrays are [Not Equal] and [Identical]

Syntax error; this won't run

235/260

235.

42 with two decimal places?

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

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

236/260

236.

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?

130

154

237/260

237.

What will be the output of the following PHP code ?

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

1234

134

238/260

238.

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

It implements ArrayAccess

It is designed to store values of various types

It takes responsibility for instantiating objects

It uses static methods

Only one instance of the class can exist

239/260

239.

What will be the output of the following PHP code ?

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

no output

error

hello

240/260

240.

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

It will display all the three lines.

Missing Book

Book Details

The script will throw an error.

241/260

241.

What is the output of the following code?

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

242/260

242.

What does the following code snippet do?

$a = `ls -l`;

It will cause a warning message.

It will cause an error.

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

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

243/260

243.

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

Function names

Class names

Variable names

Namespaces

244/260

244.

What will be the output of the following PHP code ?

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

true 33

no output

true 32

true 22

245/260

245.

What will the following script output?

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

null

246/260

246.

Which of the following data types are compound data types?

Booleans

Array

Objects

Strings

247/260

247.

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

111

R7yu

AEN

8rutil

9tur8UH4

ablwesc_99

YU-8

248/260

248.

What would happen when the following code was run?

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

A notice

This tree is: tree (and a notice)

This tree is: (and a notice)

An error

This tree is: oak (and a notice)

249/260

249.

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

$_ENVIRONMENT

$_REQUEST

$_DATA

$_COOKIE

$_SERVER

$_COOKIES

$_GLOBAL

$_FORMS

250/260

250.

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

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

bool(False)

bool(True)

251/260

251.

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

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

$a[1]

$a[4]

$a[0]

$a[2]

$a[3]

252/260

252.

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

It is an alias of strcmp() function.

It evaluates to true if the two operands are equivalent.

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.

253/260

253.

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

AND

NOT

XOR

254/260

254.

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

$_ARGV

$GLOBALS

$_SERVER

$_POST

$_ENV

255/260

255.

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?

256/260

256.

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

There is no such function

Initiate garbage collection to free up memory

Pause the script for a certain number of processor cycles

Flush the opcode cache

257/260

257.

Consider the following PHP script:

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

What will be the output?

258/260

258.

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 );
?>

a is 4 and b is 3

Both are 3

Both are 4

a is 3 and b is 4

259/260

259.

Which of the following is not valid PHP code?

$10_somethings

$aVaR

$_10

${"MyVar"}

&$something

260/260

260.

<?php
    class Foo
    {
?>

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

which is correct?

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.

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

will work, class definitions can be split up into