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strtolower() function in PHP

The strtolower() function is used to convert all the characters of a string to lowercase. It returns a character with all the characters as lowercase.

Syntax

strtolower(str)

Parameters

  • str − The string to convert. Required.

Return

The strtolower() function returns a character with all the characters as lowercase.

Example

The following is an example −

<?php
   $mystr = "SOLARIS";
   $res = strtolower($mystr);
   print_r($res);
?>

Output

solaris