PHP GD Set image brightness

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PHP GD Set image brightness
Posted on: November 12, 2009 at 12:00 AM

This example shows how to set brightness of an image in php gd.

<?php

$im = imagecreatefromjpeg('brightness.jpg');

if($im && imagefilter($im, IMG_FILTER_BRIGHTNESS, 100))

{

echo 'Image brightness changed.';

imagejpeg($im, 'brightness.jpg');

imagedestroy($im);

}

else

{

echo 'Image brightness change failed.';

}

After running the program you will get the following output

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