PHP Interview Questions For Freshers

Practice here the most popular PHP Job Interview Questions for Freshers.
What is PHP?
PHP stands for Hypertext Preprocessor, and it is a server-side scripting language used for web development.

What are the advantages of using PHP?
PHP is open-source, cross-platform, and easy to learn. It can be used to create dynamic web pages, and it has a large community of developers, which means there are plenty of resources available.

What is the difference between GET and POST methods in PHP?
The GET method is used to retrieve data from the server, while the POST method is used to submit data to the server.

What is the difference between include and require in PHP?
The include statement includes a file in PHP, and if the file is not found, it will generate a warning. The require statement also includes a file, but if the file is not found, it will generate a fatal error.

What is the difference between echo and print in PHP?
Both echo and print are used to output data in PHP. Echo is slightly faster and can take multiple arguments, while print only takes one argument.

What is a session in PHP?
A session is a way to store data across multiple pages or requests. It is stored on the server, and a unique session ID is sent to the user's browser to identify the session.

What is the difference between $_GET and $_POST in PHP?
$_GET is an array that contains the values submitted using the GET method, while $_POST is an array that contains the values submitted using the POST method.

What is a cookie in PHP?
A cookie is a small file that is stored on the user's computer and is used to store information about the user's preferences or actions on a website.

What is a PHP function?
A PHP function is a block of code that can be called from other parts of the code to perform a specific task.

What is the difference between a function and a method in PHP?
A function is a standalone block of code, while a method is a function that belongs to a class.

What is an array in PHP?
An array is a data structure that stores multiple values in a single variable. Each value is assigned a key, which can be used to access the value.

What is the difference between an indexed array and an associative array in PHP?
An indexed array uses numeric keys, while an associative array uses string keys.

What is the difference between == and === in PHP?
The == operator compares two values for equality, while the === operator compares two values for equality and type.

What is the use of the count() function in PHP?
The count() function is used to count the number of elements in an array or the number of characters in a string.

What is the difference between trim() and rtrim() in PHP?
The trim() function removes whitespace from the beginning and end of a string, while the rtrim() function only removes whitespace from the end of a string.

What is the use of the explode() function in PHP?
The explode() function is used to split a string into an array based on a delimiter.

What is the use of the implode() function in PHP?
The implode() function is used to join an array into a string using a delimiter.

What is a database connection in PHP?
A database connection is a connection between a PHP script and a database server that allows the script to retrieve, update, and delete data from the database.

What is the use of the mysqli_connect() function in PHP?
The mysqli_connect() function is used to establish a connection to a MySQL database.

What is the difference between mysqli and PDO in PHP?
Both mysqli and PDO are PHP extensions used to connect to databases.
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