So I downloaded and edited a script off the internet to pull an image and find out the hex values it contains and their percentages:
The script is here:
<?php
$delta = 5;
$reduce_brightness = true;
$reduce_gradients = true;
$num_results = 5;
include_once("colors.inc.php");
$ex=new GetMostCommonColors();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>Colour Verification</title>
</head>
<body>
<div id="wrap">
<img src="http://www.image.come/image.png" alt="test image" />
<?php
$colors=$ex->Get_Color("http://www.image.come/image.png", $num_results, $reduce_brightness, $reduce_gradients, $delta);
$success = true;
foreach ( $colors as $hex => $count ) {
if ($hex !== 'e6af23') {$success = false; }
if ($hex == 'e6af23' && $count > 0.05) {$success = true; break;}
}
if ($success == true) { echo "This is the correct colour. Success!"; } else { echo "This is NOT the correct colour. Failure!"; }
?>
</div>
</body>
</html>
Here is a pastebin link to the file colors.inc.php
Now the script works absolutely fine if I use an image that is on the server, eg use /image.png in the Get_Color function. However, if I try and use an image from another website including a http://www.site.com/image.png then the script no longer works and this error appears:
Warning: Invalid argument supplied for foreach() in … on line 22
Is anyone able to see a way that I would be able to hotlink to images because this was the whole point of using the script!
You must download a file to the server and pass its full filename to the method
Get_Color($img)as$imgparameter.So, you need to investigate another SO question: Download File to server from URL