PHP Multiple Choice Questions (MCQs) and Answers

To enforce a specific framework's best practices

To ensure compatibility with PHP versions

To standardize coding style and practices for better readability and maintainability

To optimize performance

Using die() or exit() statements

Suppressing errors with the @ operator

Implementing structured exception handling with try-catch blocks

Logging errors to a file and displaying a generic error message to the user

Hardcoded in the PHP files

Stored in a separate configuration file and ignored from version control systems

Stored in the database

Encoded and embedded within the code

Using short, non-descriptive names for brevity

Using all-uppercase letters for clarity

Using meaningful, descriptive names following a consistent naming convention

Varying naming conventions throughout the application

Using them to store user input directly

Declaring them in every file

Using them extensively throughout the application

Initializing them in every function

To create faster websites

To reload the entire webpage

To communicate with the server asynchronously

To increase server load

By reloading the page with new content

By sending a JavaScript function

By returning data, often in JSON or XML format

By redirecting the user to a different page

A PHP script on the client side

A form submission event

An XMLHttpRequest or a similar JavaScript API

A direct link to the PHP file

To create new XML files

To send requests to and receive responses from a web server

To parse XML data only

To reload the webpage

$_GET[]

$_POST[]

$_REQUEST[]

$_AJAX[]

Using json_decode() in PHP

Using parseJSON() in PHP

Using JSON.parse() in PHP

Using eval() in PHP

The $_POST array doesn't handle JSON data correctly

The json_decode() function is used incorrectly

There is no issue

The data should be accessed from $_GET instead

The type should be GET

The data object is formatted incorrectly

There is no mistake

The url should point to an HTML file

To increase PHP execution speed

To manage databases

To separate HTML from PHP logic

To encrypt data

Smarty

Blade

Twig

Mustache

By compiling templates into PHP code

By using AJAX calls

By embedding JavaScript

By direct PHP scripting in HTML files

To allow multiple PHP versions

To reuse code in different parts of an application

To improve PHP performance

To enable better database integration

$\left\{\right\{ variable \left\}\right\}$

$<\% variable \%>$

$<?php echo \$variable; ?>$

$@variable$

$@include(\text{'}header\text{'})$

$<include file=\text{'}header\text{'}>$

$<?php include \text{'}header\text{'}; ?>$

$\#include \text{'}header\text{'}$

Incorrect syntax for variable output

Misuse of the echo command

No error

The variable should be inside PHP tags

Using @endfor instead of @endforeach

Incorrect variable interpolation

No mistake

The syntax of @foreach is incorrect

Using a separate PHP file for the backend

Embedding PHP code within HTML using PHP tags

Linking PHP files using the tag

Including PHP code in CSS files

To create a new HTML file

To send HTML content to the browser

To store HTML content in a variable

To style the PHP script

Yes, just like any other HTML elements

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

Only if the CSS is embedded in PHP

Only with inline CSS

Mixing PHP and HTML/CSS in the same file

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

Using inline PHP in CSS files

Embedding CSS in PHP files

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

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

$<input type="text" value="\$value">$

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

$<div class="<?php if \left(\$condition\right) echo \text{'}class-one\text{'}; else echo \text{'}class-two\text{'}; ?>">Content</div>$

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

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

$<div class="if\left(\$condition\right) \text{'}class-one\text{'}; else \text{'}class-two\text{'};">Content</div>$

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

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

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

$<input type=\text{'}checkbox\text{'} name=\text{'}checkbox\left[\right]\text{'} value=\text{'}<?php implode(\text{'},\text{'}, \$values); ?>\text{'}>$

The echo statement is unnecessary inside PHP tags

The variable $user->name is incorrectly formatted

There is no error

The semicolon is missing after echo $user->name

The if statement is incorrect

The echo statement should not be used

The syntax for the disabled attribute is incorrect

There is no mistake