(PHP 7, PHP 8)
IntlChar::isalnum — Check if code point is an alphanumeric character
Determines whether the specified code point is an alphanumeric character (letter or digit). true for characters with general categories "L" (letters) and "Nd" (decimal digit numbers).
Returns true if
codepoint is an alphanumeric character, false if not. Returns null on failure.
Beispiel #1 Testen unterschiedlicher Codepoints
<?php
var_dump(IntlChar::isalnum("A"));
var_dump(IntlChar::isalnum("1"));
var_dump(IntlChar::isalnum("\u{2603}"));
?>Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
bool(true) bool(true) bool(false)