convert binary data to image using php -

this question has answer here:

• coverting hex image in php? 2 answers

i have binary image data saved in old database, saved old developer, want display image using php, can not.

i have tried imagecreatefromstring returns false.

binary example data: http://freezinfo.com/gg.php

given string displayed text (extactly sequence), it's lineup of hexadecimal numbers.

in jpeg, magic numbers of such file ff d8 first 2 bytes , ff d9 last 2 bytes (compare how identify contents of byte[] jpeg?).

these hexadecimal (hex in short) numbers can found @ beginning , end of sequence well:

ff00d800ff00 ... 1f00ff00d9000 ##  ##               ##  ## 

looking these magic numbers reveals hex values append 00 always. shows @ end single 0 found.

so 4 characters form 1 value. hex-encoded looks 16 bit values value never goes on 8 bit range (0-255), therefore there 00 visible.

with information alone 1 can try turn binary string php's imagecreatefromstring can deal with:

$string = implode('',         // map array of binary strings binary string     array_map('chr',          // map ord integer value character         unpack('v*',          // unsigned short (always 16 bit, little endian byte order)             pack("h*", $data) // hex binary (high nibble first) ))); 

using such string in

$result = imagecreatefromstring($string); imagejpeg($result, 'test.jpg'); 

reveals following php error notice:

imagecreatefromstring(): gd-jpeg, libjpeg: recoverable error: corrupt jpeg data: bad huffman code

and following image:

this looks desperately broken. facing additional encoding problem here. last nul byte suggests more has been done , there must reason why data has been stored 16 bit hex values instead of binary data (blob) databases have support that.

but don't waste time, because of flaw in software , configuration used in past, might data-loss can restore backups.