IntlChar::isxdigit
(PHP 7)
IntlChar::isxdigit — Check if code point is a hexadecimal digit
Descrierea
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.
Parametri
-
codepoint -
Valoarea codepoint de tip integer (de ex.
0x2603pentru U+2603 SNOWMAN) sau caracterul codificat ca string în UTF-8 (de ex."\u{2603}")
Valorile întoarse
Returns true if
codepoint is a hexadecimal character, false if not.
Note
Notă:
In order to narrow the definition of hexadecimal digits to only ASCII characters use:
<?php
$isASCIIHexadecimal = IntlChar::ord($codepoint) <= 0x7F && IntlChar::isxdigit($codepoint);
?>
Exemple
Example #1 Testarea diferitor code points
<?php
var_dump(IntlChar::isxdigit("A"));
var_dump(IntlChar::isxdigit("1"));
var_dump(IntlChar::isxdigit("\u{2603}"));
?>
Exemplul de mai sus va afișa:
bool(true) bool(true) bool(false)
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