hex2bin

(No version information available, might only be in SVN)

hex2bin — Convert hex to binary

설명

string hex2bin ( string $data )

Converts the hex representation of data to binary

인수

data: Hexadecimal representation of data.

반환값

Returns the binary representation of the given data.

예제

Example #1 hex2bin() example


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

위 예제의 출력 예시:

string(16) "example hex data"

참고

bin2hex() - 바이너리 데이터를 16진 표현으로 변환
unpack() - Unpack data from binary string

html_entity_decode

hebrevc

[edit] Last updated: Sat, 07 Jan 2012

add a note User Contributed Notes hex2bin - [4 notes]

down

Anonymous ¶

1 year ago


The function hex2bin does not exist in PHP5.

You can use 'pack' instead :



$binary_string = pack("H*" , $hex_string);

down

Johnson ¶

4 months ago


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.





<?php


        function hextobin($hexstr)


    {


        $n = strlen($hexstr);


        $sbin="";   


        $i=0;


        while($i<$n)


        {       


            $a =substr($hexstr,$i,2);           


            $c = pack("H*",$a);


            if ($i==0){$sbin=$c;}


            else {$sbin.=$c;}


            $i+=2;


        }


        return $sbin;


    }


?>

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jarismar dot php at gmail dot com ¶

5 months ago


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

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Anonymous ¶

1 year ago


The function pack("H*" , $hex_string); will not work as expected if $hex_string contains an odd number of hexadecimal digits.





For example:





<?php echo ord(pack("H*", 'F')); ?>





will return 240 not 15. Use pack("H*", '0F'); instead.

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