Podręcznik PHP
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# ctype_alpha

(PHP 4 >= 4.0.4)

ctype_alpha -- Check for alphabetic character(s)

## Description

bool ctype_alpha ( string text)

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

See also ctype_upper(), ctype_lower(), and setlocale().

Poprzedni | Spis treści | Następny
ctype_alnum | Początek rozdziału | ctype_cntrl