PHP strtolower() Function

PHP strtolower() Function makes all characters of string to lowercase. It is php in-built function.

Syntax :

strtolower(string);

Parameters ,

string : Required. It is required to make all characters of string to lowercase.

It returns the lowercased string.

Similar function of strtolower():

ucwords(): It makes the first character of each word to uppercase in string.
strtoupper() : It converts a whole string into uppercase.
lcfirst() : It converts only the first character of a string into lowercase.
ucfirst() : It converts only the first character of a string into uppercase.

Let's see below example to understand php strtolower() Function in details.

Example :

<?php
$str= 'LEARN PHP STRTOLOWER FUNCTION TUTORIAL AT ARYATECHNO!';
$result1= strtolower($str);
echo "<br> strtolower function : ".$result1;
?>

Output :

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