IntlChar::isalnum
PHP function
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(PHP 7, PHP 8)
Check if code point is an alphanumeric character
Description
IntlChar::isalnum(int|string $codepoint): bool|null
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).
Parameters
codepointParameter
Return Values
Returns true if codepoint is an alphanumeric character, false if not. Returns null on failure.
Examples
Example
php
<?php
var_dump(IntlChar::isalnum("A"));
var_dump(IntlChar::isalnum("1"));
var_dump(IntlChar::isalnum("\u{2603}"));
?>The above example will output:
output
bool(true)
bool(true)
bool(false)