ctype_lower

(PHP 4 >= 4.0.4, PHP 5)

ctype_lower -- Check for lowercase character(s)

Descrição

bool ctype_lower ( string text )

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

Parâmetros

text

The tested string.

Valores de retornado

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

Exemplos

Exemplo 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";
    }
}
?>

O exemplo acima irá imprimir:

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.

Veja também

ctype_alpha()
ctype_upper()
setlocale()