array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'uk', ), 'this' => array ( 0 => 'function.hexdec.php', 1 => 'hexdec', 2 => 'Hexadecimal to decimal', ), 'up' => array ( 0 => 'ref.math.php', 1 => 'Функції Math', ), 'prev' => array ( 0 => 'function.fpow.php', 1 => 'fpow', ), 'next' => array ( 0 => 'function.hypot.php', 1 => 'hypot', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/math/functions/hexdec.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

hexdec

(PHP 4, PHP 5, PHP 7, PHP 8)

hexdec — Hexadecimal to decimal

Опис

hexdec(string $hex_string): int|float

Returns the decimal equivalent of the hexadecimal number represented by the hex_string argument. hexdec() converts a hexadecimal string to a decimal number.

hexdec() will ignore any non-hexadecimal characters it encounters. As of PHP 7.4.0 supplying any invalid characters is deprecated.

Параметри

hex_string

The hexadecimal string to convert

Значення, що повертаються

The decimal representation of hex_string

Журнал змін

Версія Опис
7.4.0 Passing invalid characters will now generate a deprecation notice. The result will still be computed as if the invalid characters did not exist.

Приклади

Приклад #1 hexdec() example

<?php
var_dump(hexdec("ee")); // prints "int(238)"
var_dump(hexdec("a0")); // prints "int(160)"
?>

Приклад #2 hexdec() with Invalid Characters

<?php
var_dump(hexdec("See")); // print "int(238)"
var_dump(hexdec("that")); // print "int(10)"
?>

Примітки

Зауваження:

The function can convert numbers that are too large to fit into the platforms int type, larger values are returned as float in that case.

Прогляньте також