strtolower
(PHP 4, PHP 5)
strtolower — Make a string lowercase
說明
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.
參數
- str
-
The input string.
Return值
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
?>
註釋
Note: 本函式可安全用於二進位對象。