Ctype Функции
PHP Manual

ctype_lower

(PHP 4 >= 4.0.4, PHP 5)

ctype_lowerCheck for lowercase character(s)

Описание

bool ctype_lower ( string $text )

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

Параметри

text

The tested string.

Връщани стойности

Returns TRUE if every character in text is a lowercase letter in the current locale.

Примери

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

<?php
$strings 
= array('aac123''qiutoas''QASsdks');
foreach (
$strings as $testcase) {
    if (
ctype_lower($testcase)) {
        echo 
"The string $testcase consists of all lowercase letters.\n";
    } else {
        echo 
"The string $testcase does not consist of all lowercase letters.\n";
    }
}
?>

Примерът по-горе ще изведе:

The string aac123 does not consist of all lowercase letters.
The string qiutoas consists of all lowercase letters.
The string QASsdks does not consist of all lowercase letters.

Вж. също


Ctype Функции
PHP Manual