Senior PHP Developer Interview Questions and Answers for Freshers

Updated 7 Feb 2023

Q1. what are difference between function and method

Ans.

Functions are standalone blocks of code while methods are functions that belong to a class.

Functions are defined outside of a class while methods are defined inside a class.
Functions can be called directly while methods are called on an object of a class.
Methods have access to the data and properties of the class while functions do not.
Example of a function: function addNumbers($a, $b) { return $a + $b; }
Example of a method: class Calculator { public function addNumbers($a, $...read more

Ans.

PHP is selected for web development due to its ease of use, flexibility, and large community support.

PHP is easy to learn and use, making it accessible for beginners
PHP is flexible and can be used for a variety of web development tasks
PHP has a large community of developers who contribute to its development and provide support
PHP is open source and free to use, making it a cost-effective option for web development
PHP integrates well with other technologies, such as databases ...read more

Ans.

The difference between $var and $$var is that $var is a variable with a fixed name, while $$var is a variable with a variable name.

The $var variable is a regular variable with a fixed name, while $$var is a variable with a variable name.
The $$var variable is also known as a variable variable.
The value of $$var is determined by the value of $var.
Example: $var = 'foo'; $$var = 'bar'; echo $foo; // Output: bar'

Ans.

Variables can be changed while constants cannot be changed once defined.

Variables are used to store data that can be changed during program execution
Constants are used to store data that cannot be changed once defined
Variables are declared using the $ symbol while constants are declared using the define() function
Constants are useful for defining values that are used throughout the program and should not be changed

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Ans.

Composer is a dependency manager for PHP that simplifies the process of installing and managing third-party libraries.

Composer allows developers to easily add external libraries to their PHP projects
It manages dependencies and ensures that all required libraries are installed and up-to-date
Composer uses a JSON file called 'composer.json' to define project dependencies
It also provides a command-line interface for installing, updating, and removing dependencies
Composer is widel...read more

Ans.

PEAR stands for PHP Extension and Application Repository.

PEAR is a framework and distribution system for reusable PHP components.
It provides a structured library of code, a system for package maintenance, and a standard for code style.
PEAR packages can be easily installed and managed using the PEAR command-line tool.
Examples of popular PEAR packages include PHPUnit, PHPMailer, and HTML_QuickForm.
PEAR is no longer actively maintained and has been superseded by Composer in mode...read more

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