IntlChar::isxdigit
(PHP 7, PHP 8)
IntlChar::isxdigit — Check if code point is a hexadecimal digit
Description
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.
Liste de paramètres
-
codepoint -
La valeur codepoint de type entier (i.e.
0x2603pour U+2603 SNOWMAN), ou le caractère encodé en UTF-8 de type chaîne de caractères (i.e."\u{2603}")
Valeurs de retour
Returns true if
codepoint is a hexadecimal character, false if not. Returns null on failure.
Exemples
Exemple #1 Test de différents codepoint
<?php
var_dump(IntlChar::isxdigit("A"));
var_dump(IntlChar::isxdigit("1"));
var_dump(IntlChar::isxdigit("\u{2603}"));
?>L'exemple ci-dessus va afficher :
bool(true) bool(true) bool(false)
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);
?>
Voir aussi
- IntlChar::isdigit() - Check if code point is a digit character
- ctype_xdigit() - Vérifie qu'un caractère représente un nombre hexadécimal
add a note
