ctype_lower

(PHP 4 >= 4.0.4, PHP 5)

ctype_lower -- Check for lowercase character(s)

Description

bool ctype_lower ( string text )

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

Parameters

text

The tested string.

Return Values

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

Voorbeelden

Voorbeeld 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";
    }
}
?>

Het resultaat van dit script is als volgt:

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.

Zie ook

ctype_alpha()
ctype_upper()
setlocale()