IntlChar::isdigit
(PHP 7, PHP 8)
IntlChar::isdigit — Check if code point is a digit character
Description
public static IntlChar::isdigit(int|string
$codepoint): ?boolDetermines whether the specified code point is a digit character.
true for characters with general category "Nd" (decimal digit numbers). Beginning with Unicode 4, this is the same as testing for the Numeric_Type of Decimal.
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 a digit character, false if not. Returns null on failure.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::isdigit("A"));
var_dump(IntlChar::isdigit("1"));
var_dump(IntlChar::isdigit("\t"));
?>
The above example will output:
bool(false) bool(true) bool(false)
See Also
- IntlChar::isalpha() - Check if code point is a letter character
- IntlChar::isalnum() - Check if code point is an alphanumeric character
- IntlChar::isxdigit() - Check if code point is a hexadecimal digit
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