Coverting Hex to Image in PHP?

Question

I am developing mobile app which talks with server via PHP Webservice. This is my first time using PHP. I managed to upload data in to database. Now i need to s

Answer 1

Convert the HEX string to binary:

$binary = pack("H*", $hex);

pack("H*", ...) is equivalent to hex2bin, which is available since PHP 5.4.

Write it to disk:

file_put_contents("file.png", $binary);

Answer 2

Suppose you have received a hex string in a page where you want to convert this hex to real image. Please check this code snippet will help you or not.

<?php  

    $hexpic=".......................
    .....................";

    # convert the hex string to binary

    $data = pack("H" . strlen($hexpic), $hexpic);

    #write the binary string into an image file

    file_put_contents("sample.png", $data);
?>