Decrypt Web

Jan 20, 2012 Posted by DWRoot in PHP/MySQL

Encode Decode image using PHP

Hello,

I am describing here the way to
1) Encode image to generate a string
2) Decode image from a given encoded string

1) Here you need to specifiy the path of your image in variable ‘$image_path’

<?php
   	$image_path = 'test_image.gif'; //this will be the physical path of your image   

   	$img_binary = fread(fopen($image_path, "r"), filesize($image_path));

    $img_str = base64_encode($img_binary); // will produce the encoded string

    echo '<img src="data:image/gif;base64,'.$img_str.'" />'; //you can display the image on browser screen using image tag, if jpeg or jpg image than use 'image/jpg'
?>

2) Here I am using the string produced from the exuting the code seen above, it can be any encoded string which is generated from image

<?php
	$decoded_str = base64_decode($img_str); //pass the encoded string here

	$im = imagecreatefromstring($decoded_str);
	//below code will display the image on browser
	if ($im !== false) {
	    header('Content-Type: image/gif');
	    imagegif($im);
		imagedestroy($im);
	}
	else {
	    echo 'An error occurred.';
	}
?>

Hope this is helpful.