Zend Preparation | Online PHP Quiz

Data Format & Types singleQuestion

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Webservices are primarily meant to support

business-to-business communication

machine-to-machine interaction

improved accessibility for websites

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Which of the following expressions will make a cookie expire in exactly one hour (assuming that the client machine on which the browser is set to the correct time and time zone - and that it resides in a time zone different from your server's)?

time() + 3600

gmtime(3600)

time(3600)

gmtime() + 3600

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Which of the following functions sets up start and end element handlers?

xml_parser_create_ns()

xml_set_element_handler()

xml_parse_into_struct()

xml_set_object()

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Which of the following retrieves the child nodes of a specified XML node?

getDocNamespaces()

getName()

children()

getNamespaces()

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Which of the following functions in SimpleXML can be used to return an iterator containing a list of all subnodes of the current node?

getName()

asXML()

attributes()

children()

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Which of the following is used to retrieve the namespaces used in an XML document from a SimpleXMLElement object?

getNamespaces()

getElement()

getDefined()

getName()

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Which of the following could be used to add a book to an existing SimpleXMLElement object stored in $library representing a collection of books?

$library->addChild("title", "Best book ever")

$library->addBook("title", "Best book ever")

$library->addChild(new SimpleXMLElement("title", "Best book ever"))

$library->children()->add("title", "Best book ever")

$library->xpath(new SimpleXMLElement("title", "Best book ever"))

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Which of the following are the methods used for producing web services?

SOAP

DCOM

REST

XML-RPC

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What will this script output?

<?php
$emptyArray = [];
$encode = json_encode($emptyArray, JSON_FORCE_OBJECT);
$decode = json_decode($encode);
echo gettype($decode);

object

array

Syntax error; it won't run at all

string

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10.

Which of the following is used to retrieve the name of an XML element from a SimpleXMLElement object?

getCall()

getNamespaces()

getName()

getDefined()

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11.

Which of the following function is used to parse XML data into an array structure?

xml_parse_into_struct()

xml_set_processing_instruction_handler()

xml_set_object()

xml_set_external_entity_ref_handler()

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12.

Fill in the blank with the appropriate function name. The ____ function is used to return the current time measured in the number of seconds since the Unix Epoch (January 1, 1970, 00:00:00 GMT). *Matching is case-insensitive.

time

strtotime

timefromdate

date

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13.

Which of the following is a valid SOAP client call?

$client = new SoapClient;

$client = new SoapClient(null, array());

$client = new SoapClient("any.wsdl");

$client => SoapClient = "any.wsdl";

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14.

What DOMElement method should be used to check for availability of a non-namespaced attribute?

hasAttributeNS()

getAttribute()

getAttributeNS()

hasAttribute()

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15.

All of the following are the advantages of Webservice except for which one?

It provides potential SOAP extension.

It provides OOPS support.

It provides MXML support.

It provides CURL support.

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16.

Which of the following is an XML protocol that implements the communication between one to another machine, including the publishing, finding, binding, and calling of a Webservice?

HTTP

SOAP

REST

POP3

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17.

All of the following are the pre-defined XML entities except for which one?

;

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18.

Which of the following functions will you use to create a new DomElement node?

Each correct answer represents a complete solution. Choose three.

DomDocument::createElementNS()

DomNode::cloneNode()

DomDocument::createElement()

DomDocument::createTextNode()

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19.

What is the simplest way of transforming the output of microtime() into a single numeric value?

$time = array_sum (explode (' ', microtime()));

$time = microtime() + microtime();

$time = implode (' ', microtime());

$time = explode (' ', microtime()); $time = $time[0] + $time[1];

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20.

Which function can be used to format a local timestamp according to a specific locale?

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21.

Which of the following can be registered as entry points with a SoapServer instance (choose 3)

All methods from a class

A single method from a class

All classes defined in a script

A single function

Multiple functions at once

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22.

What code snippet will you use at line number four (4) in the code snippet given below?

<?php
$client = new SoapClient("any.wsdl", array('exceptions' => 0));
$result = $client->SomeFunction();
if (??????) {
    trigger_error("SOAP Fault: (faultcode: {$result->faultcode}, faultstring: {$result->faultstring})", E_USER_ERROR);
}
?>

is_soap_fault($result)

is_soap_error_handler($result)

use_soap_fault_handler($result)

use_soap_error_handler($result)

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23.

Which of the following protocols is used to standardize the description of Web services so providers and requesters are speaking the same language?

UDDI

HTTP

SOAP

WSDL

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24.

Keeping into consideration that the EST time zone is one hour ahead of the CST time zone (that is, at any given time it will be one hour later in EST than in CST), what will the following script output?

-1

3600

-3600

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25.

Which function is used to allow a parser to be used within an object?

xml_parse_into_struct()

xml_set_character_data_handler()

xml_parser_set_option()

xml_set_object()

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26.

Given a class called SoapFunctions and a working WSDL for the methods in that class, what needs to be added to the code below to serve those methods over SOAP?

<?php
require("SoapFunctions.php");
$s = new SoapServer($wsdl);
$s->handle();
?>

$s->setClass("SoapFunctions");

set_soap_class($s, "SoapFunctions");

$s->setHandler("SoapFunctions");

nothing to add, the code above would work

set_soap_handler($s, "SoapFunctions");

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27.

The getdate() function returns _____

A Boolean

A floating-point number

A string

An integer

An array

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28.

Which of the following is used to create an XML parser with namespace support?

xml_get_current_byte_index()

xml_parser_create_ns()

xml_get_current_line_number()

xml_get_current_column_number()

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29.

Your PHP script is repeatedly parsing 500KB of data returned from a remote web service into browser-readable HTML.
Users complain that the script takes a long time to run, Which of the following measures usually leads to the best results?

Activate the opcode cache

Upgrade to the latest version of PHP

Cache the data returned by the web service locally

Install an SSD drive on the server

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30.

What will the following script output?

<?php
$time = strtotime ('2004/01/01');
echo date ('H:\i:s', $time);
?>

12:00:00

00:i:00

00:00:00

12:i:00

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31.

What function name should replace the question marks in the following script?

<?php
for ($i = 0; $i < 100; $i++) {
$day = rand (1, 31);
$month = rand (1, 12);
$year = rand (1000, 2500);
 if (????????? ($month, $day, $year)) {
echo "$month/$day/$year is a valid date\n";
 } else {
echo "$month/$day/$year is not a valid date\n";
 }
}
?>

strftime()

microtime()

date()

checkdate()

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32.

What will be the output of the following PHP code snippet?

<?php
 echo strtotime("24:00");
 ?>

True

False

1564124400

Script will return an error message.

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33.

Which of the following functions do not return a timestamp? (Choose 2)

gmmktime()

time()

localtime()

date()

strtotime()

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34.

Which of the following protocols is normally used by Webservices?

FTP

POP3

HTTP

SFTP

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35.

Which of the following sentences are correct?

time() + 24*60*60 returns the current date and time plus one day

time() + 24*60*60*100 returns the current date and time plus one day

time() + 60*60*100 returns the current date and time plus one hour

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36.

REST is a(n) ...

Web service protocol similar to SOAP with a strict XML schema.

Principle to exchange information using XML and HTTP.

API to get information from social networking sites.

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37.

What SimpleXML function is used to parse a file?

simplexml_load_string()

loadXML()

load()

simplexml_load_file()

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38.

When retrieving and manipulating date values from a database, which of the following techniques will help prevent bugs? (Choose 3)

Always ensure that the date values are in the same time zone as the web server

Write your code so that dates are only manipulated in PHP

If possible, use the database’s facilities for performing calculations on date values

Use the database’s facilities for testing a date’s validity

If the date needs to be manipulated and converted to a UNIX timestamp, ensure that the resulting value will not cause an overflow

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39.

You have been given the following PHP script:

<?php
$xmlstring = <<<XML 
<?xml version="1.0" encoding="ISO-8859-1"?> 
<email> 
<to>jenny@ucertify.com</to> 
<from>john@ucertify.com</from>
<heading>Technical issue in Linux OS</heading>
<body>There is a technical issue in my Linux system. Please Fix it. </body>
</email>
XML;
$xml = new SimpleXMLElement($xmlstring);
foreach($xml->children() as $child)
  {
<Insert code here.>
  }
 ?>

Which of the following code snippets will you insert at line number 14 to get the following output?

to: jenny@ucertify.com
 from: john@ucertify.com
 heading: Technical issue in Linux OS
 body: There is a technical issue in my Linux system. please Fix it.

echo $child->getDocNamespaces() . ": " . $child . "<br />";

echo $child->getName() . ": " . $child . "<br />";

echo $child->asXML() . ": " . $child . "<br />";

echo $child->getNamespaces() . ": " . $child . "<br />";

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40.

Fill in the Blank with the appropriate method name. The ___ is used to import the SimpleXML objects for use with DOM. *Exact matching is required.

dom_simplexml_import

load

dom_import_simplexml

import_simplexml

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41.

Which of the following is used to retrieve the namespaces declared in an XML document from a SimpleXMLElement object?

getNamespaces()

children()

getName()

getDocNamespaces()

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42.

What is the difference, in seconds, between the current timestamp in the GMT time zone and the current timestamp in your local time zone?

The two will only match if the local time zone is GMT

There is no difference

It depends on the number of hours between the local time zone and GMT

The two will never match

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43.

What will be the output of the following PHP script?

<?php
$dom = new DOMDocument();
$dom->load('book.xml');
$a = $dom->documentElement;
print_r($a);
?>

It will display the contents of the XML file.

It will throw an error.

It will display the XML code of the XML file.

It will display the root element of the XML file.

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44.

Which of the following functions will output the current time in the 08:26 am format?

Each correct answer represents a complete solution. Choose all that apply.

print date('H:i a');

print date('Y:i a');

print strftime('%I:%M %p');

print date('G:i a');

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45.

Which of the following functions can you use to add data?

Each correct answer represents a complete solution. Choose all that apply.

DomElement::setAttribute()

DomNode::insertBefore()

DomNode::appendChild()

DomNode::cloneNode()

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46.

Given a PHP value, which sample shows how to convert the value to JSON?

$string = Json::encode($value);

$value = (object) $value; $string = $value->__toJson();

$json = new Json($value); $string = $json->__toString();

$string = json_encode($value);

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47.

How would you parse a web page at http://example.com/page.php as XML?

DOMDocument::loadHTML(file_get_contents('http://example.com/page.php'));

DOMDocument::loadFile('http://example.com/page.php');

You can't; it must be well-formed XML.

simple_xml_load_html('http://example.com/page.php');

new SimpleXMLElement(file_get_contents('http://example.com/page.php'));

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48.

Which one of the following XML declarations is NOT valid?

<?xml version="1.0" ?>

<?xml standalone="no" ?>

<?xml standalone="1" ?>

<?xml version="1.1" encoding="UTF-8" ?>

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49.

Which of the following was not a built-in terminology before PHP5?

CURL

XML

SOAP

XSL

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50.

Consider the following XML file:

<?xml version="1.0" encoding="ISO-8859-1" ?>   
 <!DOCTYPE html   
      PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"   
      "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">   
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">   
   <head>   
     <title> SimpleXML Example</title>   
   </head>   
   <body>   
     <h1>   

      Please go <a href="http://www.zendpreparation.com">http://www.zendpreparationcom</a>   

     </h1>   
   </body>   
 </html>

Which of the following statements will display the HREF attribute on the anchor tag if the SimpleXML object is $sxml?

$sxml->body->h1->a->href

$sxml->body->h1->a['href']

$sxml->h1->a->href

$sxml->body->h1->a<href>

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51.

Which of the following is used to retrieve the root element from an XML file?

XMLReader::expand()

$dom->documentElement

XMLReader::close()

XMLReader::getAttribute()

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52.

Which of the following definitions describes the time function?

It calculates the time elapsed since the UNIX epoch and expresses it as an integer number

It returns the number of seconds since the UNIX epoch

All of the above

It returns the number of seconds since the UNIX epoch expressed according to the GMT time zone

It returns the number of seconds since the UNIX epoch expressed according to the local time zone

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53.

You have given the following XML data in the tasks.XML file:

<?xml version="1.0" encoding="ISO-8859-1"?>
 <tasklist>
       <note>
          <tasks>Validate data</tasks>
          <details>String Validation</details>
       </note>
       <note>
          <tasks>Secure data</tasks>
          <details>Encryption</details>
       </note>
 </tasklist>

Now, you run the following PHP script:

<?php
   $objDOM = new DOMDocument();
   $objDOM->load("tasks.xml"); 
   $note = $objDOM->getElementsByTagName("note");
   foreach( $note as $value )
   {
        $tasks = $value->getElementsByTagName("tasks");
        $task  = $tasks->item(0)->nodeValue;
        $details = $value->getElementsByTagName("details");
        $detail  = $details->item(0)->nodeValue;
        echo "$task :: $detail ";
   }
 ?>

What should be displayed when this script is executed?

The XML of whole XML document

The XML of every tasks and details nodes

The contents of the whole XML document

The contents of every tasks and details nodes

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54.

Which function is used to set up start and end element handlers?

xml_get_current_column_number

xml_get_current_line_number

xml_set_element_handler()

xml_parser_create()

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55.

Which of the following will NOT instantiate a DateTime object with the current timestamp?

$date = new DateTime('now');

$date = new DateTime();

$date = new DateTime('@' . time());

$date = new DateTime(time());

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56.

Which of the following functions returns an XML string based on SimpleXML element?

xml_error_string()

xml_get_current_byte_index()

xml_get_current_column_number()

asXML()

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57.

What would happen if the following script were run on a Windows server set to Moscow, Russia’s time zone?

<?php
echo gmmktime(0, 0, 0, 1, 1, 1970);
?>

It would output the number 1

It would output the number 0

It would output the number -1

It would raise an error