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<?php
//ImagesComparison Class Example
 require "ImagesComparison.class.php";
 
 //two images with exactly same width and height
 $compare = new ImagesComparison("a.png", "b.png");
 
 //compare two images(can skip)
 $compare->compare();
 
 //give each part of contiguous difference a number(can skip)
 $compare->index();
 
 //check the consistency of two images
 //var_dump($compare->consistency());    //(it will send a header, so skip it because of printImage)
 
 //fill in the difference with certain color: array(red, green, blue), else, random color for each contiguous part
 $compare->fillDiff();
 
 //circle the difference with certain color: array(red, green, blue), else, red; offset => make the circle bigger
 $compare->circleDiff();
 
 //print the image to the browser or a file
 $compare->printImage();
 ?>
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