imagefilter

bool imagefilter ( resource $image , int $filtertype [, int $arg1 [, int $arg2 [, int $arg3 [, int $arg4 ]]]] )

Applies a filter to an image

imagefilter() applies the given filter filtertype on the image.


<?php
$im = imagecreatefrompng('dave.png');

if($im && imagefilter($im, IMG_FILTER_GRAYSCALE))
{
    echo 'Image converted to grayscale.';

    imagepng($im, 'dave.png');
}
else
{
    echo 'Conversion to grayscale failed.';
}

imagedestroy($im);
?>



5.3.0 Pixelation support (IMG_FILTER_PIXELATE) was added. 5.2.5 Alpha support for IMG_FILTER_COLORIZE was added.

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