The strtolower() function is used to converts a string to lowercase. All other special characters or numeric characters in the string remains unchanged. This function is binary-safe.
Syntax:
strtolower(string)
string – This parameter is required. It specifies the string to convert.
Example:
<?php
$str = 'Welcome to PHP Tutorials!';
echo strtolower($str); // Output : welcome to php tutorials!
?>
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