How to Remove the Last Character from a String in PHP

Use the rtrim() Function

You can simply use the rtrim() function to remove the last character from a string.

Let's take a look at an example to understand how it actually works:

<?php
// Sample string
$str1 = "Hello World!";

echo rtrim($str1, "!");  // Outputs: Hello World
echo "<br>";

// Sample string
$str2 = "red, green, blue, ";

echo rtrim($str2, ", ");  // Outputs: red, green, blue
?>