ucfirst
(PHP 4, PHP 5)
ucfirst — Make a string's first character uppercase
说明
string ucfirst
( string $str
)
Returns a string with the first character of str capitalized, 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 ucfirst() example
<?php
$foo = 'hello world!';
$foo = ucfirst($foo); // Hello world!
$bar = 'HELLO WORLD!';
$bar = ucfirst($bar); // HELLO WORLD!
$bar = ucfirst(strtolower($bar)); // Hello world!
?>