strtolower – PHP String Functions

Syntax :

Description :

strtolower() function will take string as input and converts all letter to lowercase letter, if that character is alphabetic.

Parameter :

• string – This is a Required parameter. This is a string on which function will be performed.

Output :

This will return a lowercased string.

Related articles : ucwords(), strtoupper(), ucfirst(), lcfirst().

strtolower() – PHP Functions Example 1 :

<?php
$strExample = "An EXAMPLE of a strtolower() function.";
echo strtolower($strExample);
?>

In above example ,We have a string ‘An EXAMPLE of a strtolower() function’. Now this function will converts every letter in a string to lowercase. See below is the output of above code.

strtolower() – PHP Functions Example 2 :

<?php
$strExample = "AN Example Of A strtolower() function WITH 789789.";
echo strtolower($strExample);
?>

In above example ,We have a string ‘AN Example Of A strtolower() function WITH 789789.’. Now this function will converts every first letter in a string to lowercase, it will not do anything with numeric numbers. See below is the output of above code.

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