PHP 手册
字符串函数

hex2bin

(PHP >= 5.4.0)

hex2binDecodes a hexadecimally encoded binary string

说明

string hex2bin ( string $data )

Decodes a hexadecimally encoded binary string.

Caution

This function does NOT convert a hexadecimal number to a binary number. This can be done using the base_convert() function.

参数

data

Hexadecimal representation of data.

返回值

Returns the binary representation of the given data 或者在失败时返回 FALSE.

错误/异常

If the hexadecimal input string is of odd length an E_WARNING level error is thrown.

更新日志

版本 说明
5.4.1 A warning is thrown if the input string is of odd length. In PHP 5.4.0 the string was silently accepted, but the last byte was truncated.

范例

Example #1 hex2bin() example

<?php
$hex 
hex2bin("6578616d706c65206865782064617461");
var_dump($hex);
?>

以上例程的输出类似于:

string(16) "example hex data"

参见


字符串函数
PHP 手册