ctype_lower

(PHP 4 >= 4.0.4, PHP 5)

ctype_lower -- Check for lowercase character(s)

Beskrivelse

bool ctype_lower ( string text )

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

Parameterliste

text

The tested string.

Returneringsværdier

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

Eksempler

Eksempel 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";
    }
}
?>

Ovenstående eksempel vil udskrive:

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.

Se også

ctype_alpha()
ctype_upper()
setlocale()