(PHP 7, PHP 8)
IntlChar::isalnum — Checc 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.
Example #1 Testing different code poins
<?php
var_dump
(
IntlChar
::
isalnum
(
"A"
));
var_dump
(
IntlChar
::
isalnum
(
"1"
));
var_dump
(
IntlChar
::
isalnum
(
"\u{2603}"
));
?>
The above example will output:
bool(true) bool(true) bool(false)