PHP 7.1.21 Released

IntlChar::isxdigit

(PHP 7)

IntlChar::isxdigitCheck if code point is a hexadecimal digit

Descrição

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.

Parâmetros

codepoint

Um codepoint integer (por exemplo 0x2603 para U+2603 SNOWMAN), ou um caracter codificado como uma string UTF-8 (exemplo "\u{2603}")

Valor Retornado

Returns TRUE if codepoint is a hexadecimal character, FALSE if not.

Notas

Nota:

In order to narrow the definition of hexadecimal digits to only ASCII characters use:

<?php
$isASCIIHexadecimal 
IntlChar::ord($codepoint) <= 0x7F && IntlChar::isxdigit($codepoint);
?>

Exemplos

Exemplo #1 Testando codepoints diferentes

<?php
var_dump
(IntlChar::isxdigit("A"));
var_dump(IntlChar::isxdigit("1"));
var_dump(IntlChar::isxdigit("\u{2603}"));
?>

O exemplo acima irá imprimir:

bool(true)
bool(true)
bool(false)

Veja Também

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top