字符串函数
PHP Manual

lcfirst

(PHP 5 >= 5.3.0)

lcfirstMake a string's first character lowercase

说明

string lcfirst ( string $str )

Returns a string with the first character of str , lowercased if that character is alphabetic.

Note that 'alphabetic' is determined by the current locale. For instance, in the default "C" locale characters such as umlaut-a (ä) will not be converted.

参数

str

The input string.

返回值

Returns the resulting string.

范例

Example #1 lcfirst() example

<?php
$foo 
'HelloWorld';
$foo lcfirst($foo);             // helloWorld

$bar 'HELLO WORLD!';
$bar lcfirst($bar);             // hELLO WORLD!
$bar lcfirst(strtoupper($bar)); // hELLO WORLD!
?>

参见


字符串函数
PHP Manual