Ctype 함수 목록
PHP Manual

ctype_upper

(PHP 4 >= 4.0.4, PHP 5)

ctype_upperCheck for uppercase character(s)

설명

bool ctype_upper ( string $text )

Checks if all of the characters in the provided string, text , are uppercase characters.

인수

text

The tested string.

반환값

Returns TRUE if every character in text is an uppercase letter in the current locale.

예제

Example #1 A ctype_upper() example (using the default locale)

<?php
$strings 
= array('AKLWC139''LMNSDO''akwSKWsm');
foreach (
$strings as $testcase) {
    if (
ctype_upper($testcase)) {
        echo 
"The string $testcase consists of all uppercase letters.\n";
    } else {
        echo 
"The string $testcase does not consist of all uppercase letters.\n";
    }
}
?>

위 예제의 출력:

The string AKLWC139 does not consist of all uppercase letters.
The string LMNSDO consists of all uppercase letters.
The string akwSKWsm does not consist of all uppercase letters.

참고


Ctype 함수 목록
PHP Manual