ctype_alpha

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

ctype_alphaCheck for alphabetic character(s)

Опис

bool ctype_alpha ( string $text )

Checks if all of the characters in the provided string, text, are alphabetic. In the standard C locale letters are just [A-Za-z] and ctype_alpha() is equivalent to (ctype_upper($text) || ctype_lower($text)) if $text is just a single character, but other languages have letters that are considered neither upper nor lower case.

Параметри

text

The tested string.

Значення, що повертаються

Returns TRUE if every character in text is a letter from the current locale, FALSE otherwise.

Приклади

Приклад #1 A ctype_alpha() example (using the default locale)

<?php
$strings 
= array('KjgWZC''arf12');
foreach (
$strings as $testcase) {
    if (
ctype_alpha($testcase)) {
        echo 
"The string $testcase consists of all letters.\n";
    } else {
        echo 
"The string $testcase does not consist of all letters.\n";
    }
}
?>

Наведений вище приклад виведе:

The string KjgWZC consists of all letters.
The string arf12 does not consist of all letters.

Примітки

Зауваження:

If an integer between -128 and 255 inclusive is provided, it is interpreted as the ASCII value of a single character (negative values have 256 added in order to allow characters in the Extended ASCII range). Any other integer is interpreted as a string containing the decimal digits of the integer.

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User Contributed Notes 1 note

up
-17
Tyrunur
13 years ago
It works if you set the locale correctly:

<?php

setLocale
(LC_CTYPE, 'FR_fr.UTF-8');

?>

with this change you will get "yes" "yes"
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