How to Extract Numbers from String in PHP

• Tech Area
• Last updated on: January 8, 2026

In this tutorial, We will see how to extract the numbers from the string using the PHP inbuilt function. We are using filter_var() function to filters a variable with the FILTER_SANITIZE_NUMBER_INT. This function is used to both validate and sanitize the data.

Solution

<?php
$string = 'Welcome 2 the Tech Area';
$number = filter_var($string, FILTER_SANITIZE_NUMBER_INT);
echo $number;
?>

Output

2