hex2bin()

(PHP 5 >= 5.4.0, PHP 7)

转换十六进制字符串为二进制字符串

说明

转换十六进制字符串为二进制字符串。

这个函数不是转换十六进制数字为二进制数字。这种转换可以使用base_convert()函数。

参数

十六进制表示的数据

返回值

返回给定数据的二进制表示或者在失败时返回FALSE。

错误／异常

如果输入的十六进制字符串是奇数长数或者无效的十六进制字符串将会抛出E_WARNING级别的错误。

更新日志

范例

Example #1hex2bin()例子

以上例程的输出类似于：

string(16) "example hex data"

参见

• bin2hex()函数把包含数据的二进制字符串转换为十六进制值
• unpack()Unpack data from binary string

The function hex2bin does not exist in PHP5.
You can use 'pack' instead :
$binary_string = pack("H*" , $hex_string);

I modified the function by Johnson a bit so it can be used as a drop-in-replacement. You don't need to worry about upgrading php because when it is upgraded, it will use the build in function.

$test = bin2hex('sample ...');
echo _hex2bin($test);
// another hex2bin replacement
function _hex2bin($result) {
  $out = '';
  for($c=0;$c
will return 240 not 15. Use pack("H*", '0F'); instead.

For those who have php version prior to 5.4, i have a solution to convert hex to binary. It works for me in an encryption and decryption application.

If you want to convert hex to GUID format (In my case, it was to convert GUID from MSSQL database) :

A way to convert hex strings in the form "0x123ABC" to integer is to use the function base_convert("0x123ABC", 16, 10)

Case of an incomplete hex string following function may help:

test:

replace
function Hex2Bin($data) {
  $BinData = "";
  for ($i=0;$i

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