Ctype Функции
PHP Manual

ctype_upper

(PHP 4 >= 4.0.4, PHP 5)

ctype_upperCheck for uppercase character(s)

Описание

bool ctype_upper ( string $text )

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

Параметри

text

The tested string.

Връщани стойности

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

Примери

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";
    }
}
?>

Примерът по-горе ще изведе:

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.

Вж. също


Ctype Функции
PHP Manual