IntlChar::isalnum
(PHP 7, PHP 8)
IntlChar::isalnum — Check if code point is an alphanumeric character
Description
public static IntlChar::isalnum(int|string
$codepoint): ?bool
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
-
codepoint -
The int codepoint value (e.g.
0x2603for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g."\u")
Return Values
Returns true if
codepoint is an alphanumeric character, false if not. Returns null on failure.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::isalnum("A"));
var_dump(IntlChar::isalnum("1"));
var_dump(IntlChar::isalnum("\u"));
?>
The above example will output:
bool(true) bool(true) bool(false)
See Also
- IntlChar::isalpha() - Check if code point is a letter character
- IntlChar::isdigit() - Check if code point is a digit character
Here you can write a comment
There are no comments available yet.
