How to Convert a String to Lowercase in PHP

09/07/2021
Contents
In this article, you will learn how to convert a string to lowercase in PHP.
PHP strtolower() Function
You can use the strtolower() function in PHP to convert a string to lowercase. The function returns the lowercase version of the input string.
Syntax:
strtolower($string);
Parameters:
$string
: The input string that you want to convert to lowercase. It is a required parameter.
Example:
<?php
$string = "HELLO, WORLD!";
$lowercase = strtolower($string);
echo $lowercase;
?>
The output of the above code will be:
hello, world!
In this example, $string is the original string that we want to convert to lowercase. The strtolower() function is applied to $string and the result is stored in the $lowercase variable. Finally, we use the echo statement to print the lowercase string to the screen.