How to Retrieve a URL\'s Subdomain Using PHP?

Retrieve the Subdomain of a URL Using PHP Function

To obtain the subdomain portion of a URL, PHP offers a convenient function. Let's explore this function and provide a solution to your query.

Function to Get Subdomain

The explode() function in PHP can be utilized to split a string into an array based on a specified delimiter. To extract the subdomain from a URL, we can split the hostname using dots as the delimiter.

Solution

Here's a straightforward solution:

$subdomain = array_shift(explode('.', 'en.example.com'));

This code assigns the "en" portion of the URL to the $subdomain variable.

Alternative Approach (PHP 5.4 onwards)

Starting from PHP version 5.4, you can use a simplified approach:

$subdomain = explode('.', 'en.example.com')[0];

Both approaches accomplish the same objective: extracting the subdomain from the given URL.

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