How to remove white space from the end of a string in PHP

Use the PHP rtrim() function

You can use the PHP rtrim() function to strip whitespace from the end of a string.

Let's check out an example to understand how this function basically works:

<?php
$my_str = 'Hello World!    ';
echo strlen($my_str); // Outputs: 16
 
$trimmed_str = rtrim($my_str);
echo strlen($trimmed_str); // Outputs: 12
?>