PHP Fundamentals Quiz

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Questions and Answers

What will happen if the header() function is called after any output has been sent to the browser?

PHP will ignore the header() function.

The output will be sent but without any headers.

An error will occur indicating that headers cannot be modified. (correct)

The headers will be sent successfully.

What is the correct content type header for returning JSON data?

Content-Type: application/xml

Content-Type: text/plain

Content-Type: application/json (correct)

Content-Type: text/html

Where should empty lines or spaces not be placed when working with the header() function?

At the end of the PHP file only.

Within the blocks of PHP code.

After the header() call.

At the beginning of the PHP file before the opening tag. (correct)

What is the primary purpose of the PHP built-in server introduced in PHP 5.4?

To run applications for development and testing. Signup and view all the answers

What is the intended output of the echo statement 'echo STDERR;'?

Outputs the error messages to the standard error output. Signup and view all the answers

What is the main function of PHP when used in web development?

PHP adds dynamic content by being executed on the web server. Signup and view all the answers

Which version of PHP is supported until December 3, 2018?

PHP 7.1 Signup and view all the answers

What is the significance of the echo statement in PHP?

It outputs data to the web browser directly. Signup and view all the answers

Which of the following PHP versions is considered a legacy version?

PHP 3.0 Signup and view all the answers

When a PHP script is executed, what does it ultimately send to the user's browser?

Processed HTML Signup and view all the answers

Which PHP versions were supported until 2018?

5.5 and 5.6 Signup and view all the answers

Which statement about the PHP versioning system is true?

Each version has a distinct end-of-life date. Signup and view all the answers

What is the earliest version listed in PHP 4.x?

4.0 Signup and view all the answers

What is a notable difference between echo and print in PHP?

echo is faster than print. Signup and view all the answers

Which function is used to send a raw HTTP header in PHP?

header() Signup and view all the answers

Why is proper data escaping essential when outputting data in PHP?

To prevent XSS attacks. Signup and view all the answers

What does the header function with 'Content-Type: application/json' indicate?

The output is a valid JSON string. Signup and view all the answers

When using echo in PHP, which statement is true?

It can accept multiple arguments without parentheses. Signup and view all the answers

What output will the following PHP code generate: `header('Content-Type: text/plain'); echo 'Hello World';`?

A plain text document displaying 'Hello World'. Signup and view all the answers

Which statement correctly describes the short syntax for outputting data prior to PHP 5.4.0?

It requires short_open_tag configuration to be enabled. Signup and view all the answers

What would be the correct PHP code to output a variable as JSON?

$jsonData = json_encode(array('key' => 'value')); Signup and view all the answers

Study Notes

PHP Notes for Professionals

This book provides 400+ pages of professional hints and tricks for PHP.
The book covers various topics including working with dates, string formatting, sending email, and more.
Chapter 18 discusses working with dates, including calculating differences between dates and converting date formats.
Chapter 24 details string formatting using interpolation (inserting variables into strings), providing examples with curly braces.
Chapter 64 describes sending emails in PHP, including how to add headers and use variables for recipients, subjects, and message bodies.
The book also includes a comprehensive table of contents covering various PHP topics, such as getting started, variables, variable scope, superglobal variables, and more.

Table of Contents (Partial)

Chapter 1: Getting started with PHP (HTML output, Hello World!, PHP built-in server, PHP CLI)
Chapter 2: Variables (Accessing variables dynamically, data types, global variables, variable truthiness)
Chapter 3: Variable Scope (Superglobal variables, static properties and variables)
Chapter 4: Superglobal variables (Explanation of each superglobal)
Chapter 5: Outputting the Value of a Variable (echo, print, string concatenation)
Chapter 6: Constants (Defining constants, using constants, constant arrays)
Chapter 7: Magic Constants (Difference between __FUNCTION__ and __METHOD__, __CLASS__)
Chapter 8: Comments (Single-line and multi-line comments)
Chapter 9: Types (Type comparison, booleans, integers, floats, strings)
Chapter 10: Operators (Null coalescing operator, spaceship operator, execution operator)
Chapter 11: References (Assignment by reference, return by reference, pass by reference)
Chapter 12: Arrays (Initialization, checking key existence, creating arrays of variables)
Chapter 13: Array iteration (Using an incremental index, using internal array pointers)
Chapter 14: Executing upon an array (Applying a function to each element, Splitting an array into chunks)
---and many more chapters like dates, control structures, functions, classes, objects, sessions, cookies, JSON, SOAP, cURL, Reflection, and others.

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Description

Test your knowledge of PHP fundamentals with this quiz. From understanding the header() function to the significance of the echo statement, this quiz covers key concepts essential for any PHP developer. Perfect for beginners and those looking to refresh their skills.

PHP Fundamentals Quiz

Choose a study mode

Podcast

Questions and Answers

What will happen if the header() function is called after any output has been sent to the browser?

What is the correct content type header for returning JSON data?

Where should empty lines or spaces not be placed when working with the header() function?

What is the primary purpose of the PHP built-in server introduced in PHP 5.4?

What is the intended output of the echo statement 'echo STDERR;'?

What is the main function of PHP when used in web development?

Which version of PHP is supported until December 3, 2018?

What is the significance of the echo statement in PHP?

Which of the following PHP versions is considered a legacy version?

When a PHP script is executed, what does it ultimately send to the user's browser?

Which PHP versions were supported until 2018?

Which statement about the PHP versioning system is true?

What is the earliest version listed in PHP 4.x?

What is a notable difference between echo and print in PHP?

Which function is used to send a raw HTTP header in PHP?

Why is proper data escaping essential when outputting data in PHP?

What does the header function with 'Content-Type: application/json' indicate?

When using echo in PHP, which statement is true?

What output will the following PHP code generate: `header('Content-Type: text/plain'); echo 'Hello World';`?

Which statement correctly describes the short syntax for outputting data prior to PHP 5.4.0?

What would be the correct PHP code to output a variable as JSON?

Study Notes

PHP Notes for Professionals

Table of Contents (Partial)

Studying That Suits You

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PHP Fundamentals Quiz

Choose a study mode

Podcast

Questions and Answers

What will happen if the header() function is called after any output has been sent to the browser?

What is the correct content type header for returning JSON data?

Where should empty lines or spaces not be placed when working with the header() function?

What is the primary purpose of the PHP built-in server introduced in PHP 5.4?

What is the intended output of the echo statement 'echo STDERR;'?

What is the main function of PHP when used in web development?

Which version of PHP is supported until December 3, 2018?

What is the significance of the echo statement in PHP?

Which of the following PHP versions is considered a legacy version?

When a PHP script is executed, what does it ultimately send to the user's browser?

Which PHP versions were supported until 2018?

Which statement about the PHP versioning system is true?

What is the earliest version listed in PHP 4.x?

What is a notable difference between echo and print in PHP?

Which function is used to send a raw HTTP header in PHP?

Why is proper data escaping essential when outputting data in PHP?

What does the header function with 'Content-Type: application/json' indicate?

When using echo in PHP, which statement is true?

What output will the following PHP code generate: header('Content-Type: text/plain'); echo 'Hello World';?

Which statement correctly describes the short syntax for outputting data prior to PHP 5.4.0?

What would be the correct PHP code to output a variable as JSON?

Study Notes

PHP Notes for Professionals

Table of Contents (Partial)

Studying That Suits You

Related Documents

Description

More Like This

PHP Programming Fundamentals

BCA Web Programming Using PHP Exam November 2022

PHP Programming Concepts Quiz

Module 1 - Web Programming Using PHP

What output will the following PHP code generate: `header('Content-Type: text/plain'); echo 'Hello World';`?