Manuál PHP
Předcházející		Další

ctype_alpha

(PHP 4 >= 4.0.4, PHP 5)

ctype_alpha -- Check for alphabetic character(s)

Popis

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.

Seznam parametrů

text: The tested string.

Návratové hodnoty

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

Příklady

Příklad 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";
    }
}
?>

Výše uvedený příklad vypíše:

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

Viz také

ctype_upper()

ctype_lower()

setlocale()

Předcházející	Domů	Další
ctype_alnum	Nahoru	ctype_cntrl