PHP Interview Questions For Freshers
Tags: php, phpinterview, phpinterviewquestions, interviewquestions
Published: 2023-04-14 13:44:12

Practice here the most popular [PHP Job Interview Questions](https://www.onlineinterviewquestions.com/core-php-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.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/iyl706b4k8qosenu92i4.jpg)

**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.
Thanks for reading here.