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PHP Multiple Choice Questions (MCQs) and Answers

Master PHP with Practice MCQs. Explore our curated collection of Multiple Choice Questions. Ideal for placement and interview preparation, our questions range from basic to advanced, ensuring comprehensive coverage of PHP. Begin your placement preparation journey now!

Q121

Q121 What is AJAX primarily used for in web applications?

A

To create faster websites

B

To reload the entire webpage

C

To communicate with the server asynchronously

D

To increase server load

Q122

Q122 How does PHP typically respond to an AJAX request?

A

By reloading the page with new content

B

By sending a JavaScript function

C

By returning data, often in JSON or XML format

D

By redirecting the user to a different page

Q123

Q123 What is necessary on the client side to initiate an AJAX request to a PHP backend?

A

A PHP script on the client side

B

A form submission event

C

An XMLHttpRequest or a similar JavaScript API

D

A direct link to the PHP file

Q124

Q124 In the context of AJAX, what is the role of the XMLHttpRequest object in JavaScript?

A

To create new XML files

B

To send requests to and receive responses from a web server

C

To parse XML data only

D

To reload the webpage

Q125

Q125 What PHP method is generally used to access data sent via an AJAX POST request?

A

$_GET[]

B

$_POST[]

C

$_REQUEST[]

D

$_AJAX[]

Q126

Q126 How can you parse JSON data sent in an AJAX request to a PHP script?

A

Using json_decode() in PHP

B

Using parseJSON() in PHP

C

Using JSON.parse() in PHP

D

Using eval() in PHP

Q127

Q127 Identify the issue in this PHP snippet handling an AJAX request:
$data = json_decode($_POST['data']);

A

The $_POST array doesn't handle JSON data correctly

B

The json_decode() function is used incorrectly

C

There is no issue

D

The data should be accessed from $_GET instead

Q128

Q128 Spot the mistake in this AJAX request using jQuery to a PHP script:
$.ajax({
type: 'POST',
url: 'script.php',
data: { value: 'test' }
});

A

The type should be GET

B

The data object is formatted incorrectly

C

There is no mistake

D

The url should point to an HTML file

Q129

Q129 What is the primary purpose of a templating engine in PHP?

A

To increase PHP execution speed

B

To manage databases

C

To separate HTML from PHP logic

D

To encrypt data

Q130

Q130 Which popular templating engine is often used with Laravel?

A

Smarty

B

Blade

C

Twig

D

Mustache

Q131

Q131 How do templating engines generally output dynamic content?

A

By compiling templates into PHP code

B

By using AJAX calls

C

By embedding JavaScript

D

By direct PHP scripting in HTML files

Q132

Q132 What is the advantage of using template inheritance in PHP templating engines?

A

To allow multiple PHP versions

B

To reuse code in different parts of an application

C

To improve PHP performance

D

To enable better database integration

Q133

Q133 What is the correct way to display a variable in a Twig template?

A

{{ variable }}

B

<% variable %>

C

<?php echo $variable; ?>

D

@variable

Q134

Q134 In a Blade template, how do you include a sub-template (like a header or footer) into a main template?

A

@include('header')

B

<include file='header'>

C

<?php include 'header'; ?>

D

#include 'header'

Q135

Q135 Identify the error in this PHP use of a templating engine:
{{ echo $variable; }}

A

Incorrect syntax for variable output

B

Misuse of the echo command

C

No error

D

The variable should be inside PHP tags

Q136

Q136 Spot the mistake in this Blade template code:
@foreach($items as $item)

{{ $item }}

@endfor

A

Using @endfor instead of @endforeach

B

Incorrect variable interpolation

C

No mistake

D

The syntax of @foreach is incorrect

Q137

Q137 How can PHP be integrated into an HTML file?

A

Using a separate PHP file for the backend

B

Embedding PHP code within HTML using PHP tags

C

Linking PHP files using the tag

D

Including PHP code in CSS files

Q138

Q138 What is the purpose of echoing HTML code in a PHP script?

A

To create a new HTML file

B

To send HTML content to the browser

C

To store HTML content in a variable

D

To style the PHP script

Q139

Q139 Can CSS be used to style HTML elements generated by PHP?

A

Yes, just like any other HTML elements

B

No, PHP-generated HTML elements cannot be styled with CSS

C

Only if the CSS is embedded in PHP

D

Only with inline CSS

Q140

Q140 What is the best practice for separating PHP logic from HTML/CSS in a web application?

A

Mixing PHP and HTML/CSS in the same file

B

Using PHP solely for backend processing and HTML/CSS for the frontend

C

Using inline PHP in CSS files

D

Embedding CSS in PHP files

Q141

Q141 What is the correct way to set the value of an HTML input field using PHP?

A

<input type="text" value="echo $value;">

B

<input type="text" value="<?php echo $value; ?>">

C

<input type="text" value="$value">

D

<input type="text" php-value="$value">

Q142

Q142 How can you dynamically set the class of an HTML element based on a PHP condition?

A

<div class="<?php if ($condition) echo 'class-one'; else echo 'class-two'; ?>">Content</div>

B

<div class="$condition ? 'class-one' : 'class-two'">Content</div>

C

<div php-class="$condition ? 'class-one' : 'class-two'">Content</div>

D

<div class="if($condition) 'class-one'; else 'class-two';">Content</div>

Q143

Q143 In a PHP script, how can you generate a list of HTML checkboxes from an array of values?

A

foreach ($values as $value) { echo "<input type='checkbox' name='checkbox[]' value='$value'>"; }

B

for ($i = 0; $i < count($values); $i++) { echo "<input type='checkbox' name='checkbox[]' value='" . $values[$i] . "'>"; }

C

<input type='checkbox' name='checkbox[]' value='<?php foreach ($values as $value) { echo $value; } ?>'>

D

<input type='checkbox' name='checkbox[]' value='<?php implode(',', $values); ?>'>

Q144

Q144 Identify the error in this PHP code used within HTML:

name ?>

A

The echo statement is unnecessary inside PHP tags

B

The variable $user->name is incorrectly formatted

C

There is no error

D

The semicolon is missing after echo $user->name

Q145

Q145 Spot the mistake in this PHP and HTML integration:
<button type='submit' >Submit

A

The if statement is incorrect

B

The echo statement should not be used

C

The syntax for the disabled attribute is incorrect

D

There is no mistake

Q146

Q146 Which of the following is a correct PHP tag?

A

<?php ?>

B

<php>

C

<? ?>

D

<% %>

Q147

Q147 PHP can be embedded in which of the following types of documents?

A

HTML only

B

CSS only

C

JavaScript only

D

HTML, CSS, and JavaScript

Q148

Q148 In PHP, which character is used at the end of each statement?

A

:

B

;

C

,

D

.

Q149

Q149 How do you write comments in PHP?

A

Using // for single line and /* */ for multiple lines

B

Using #

C

Using

D

Using **

Q150

Q150 What is the correct way to declare a variable in PHP?

A

int $varName

B

$varName

C

var $varName

D

declare $varName