IntlChar::isxdigit
IntlChar::isxdigit
(PHP 7)
IntlChar::isxdigit — Check if code point is a hexadecimal digit
Description
public static bool IntlChar::isxdigit ( mixed $codepoint )
Determines whether the specified code point is a hexadecimal digit.
TRUE
for characters with general category "Nd" (decimal digit numbers) as well as Latin letters a-f and A-F in both ASCII and Fullwidth ASCII. (That is, for letters with code points 0041..0046, 0061..0066, FF21..FF26, FF41..FF46.)
This is equivalent to IntlChar::digit($codepoint, 16) >= 0.
Parameters
Return Values
Returns TRUE
if codepoint
is a hexadecimal character, FALSE
if not.
Notes
Note:
In order to narrow the definition of hexadecimal digits to only ASCII characters use:
<?php $isASCIIHexadecimal = IntlChar::ord($codepoint) <= 0x7F && IntlChar::isxdigit($codepoint); ?>
Examples
Example #1 Testing different code points
<?php var_dump(IntlChar::isxdigit("A")); var_dump(IntlChar::isxdigit("1")); var_dump(IntlChar::isxdigit("\u{2603}")); ?>
The above example will output:
bool(true) bool(true) bool(false)
See Also
- IntlChar::isdigit() - Check if code point is a digit character
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/intlchar.isxdigit.php