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ctype_alpha
Manuál PHP
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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()

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ctype_alnumNahoru