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Last updated: Sat, 27 Jan 2007

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# ctype_lower

(PHP 4 >= 4.0.4, PHP 5)

ctype_lower -- Check for lowercase character(s)

## Описание

bool ctype_lower ( string text )

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

## Список параметров

`text`

  The tested string.

## Возвращаемые значения

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

## Примеры

Пример 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";
}
}
?>`

Результат выполнения данного примера:

    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.

## Смотрите также

ctype_alpha()
ctype_upper()
setlocale()

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Last updated: Sat, 27 Jan 2007
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