strtolower
(PHP 4, PHP 5)
strtolower — Make a string lowercase
Description
string strtolower
( string $str
)
Returns string with all alphabetic characters converted to lowercase.
Note that 'alphabetic' is determined by the current locale. This means that in i.e. the default "C" locale, characters such as umlaut-A (Ä) will not be converted.
Parameters
- str
-
The input string.
Return Values
Returns the lowercased string.
範例
Example#1 strtolower() example
<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = strtolower($str);
echo $str; // Prints mary had a little lamb and she loved it so
?>
Notes
Note: 這個函數可安全的使用於二進位。