[PHP] Image Effects #1

<?php

    //------------------------------------------------
    // Schiriac Robert - RobiXxu
    // http://stud.usv.ro/~rschiriac/
    //------------------------------------------------

    header('Content-type: image/jpeg');
    $imgURL     =       'img.jpg';
    $img        =       imagecreatefromjpeg($imgURL);
    //imagegammacorrect($img,1.0, 0.7);
    $med    =   array(
                        array(0,-1,0),
                        array(-1,4,-1),
                        array(0,-1,0)
                        ); //div 1
    $emboss =   array(
                        array(2,0,0),
                        array(0,-1,0),
                        array(0,0,-1)
                        ); // div 2 - offset 128
    $gaussian =     array(
                        array(1.0,2.0,1.0),
                        array(2.0,4.0,2.0),
                        array(1.0,2.0,1.0)
                        );
    $sharpen =  array(
                        array(-1,-1,-1),
                        array(-1,16,-1),
                        array(-1,-1,-1)
                        );// div 8
    //imagefilter($img, IMG_FILTER_NEGATE);
    //imagefilter($img, IMG_FILTER_GRAYSCALE);
    // imagefilter($img, IMG_FILTER_BRIGHTNESS,100);
    imagefilter($img, IMG_FILTER_CONTRAST,-10);
    //imagefilter($img, IMG_FILTER_COLORIZE,255,0,255);
    imagefilter($img, IMG_FILTER_COLORIZE,0,0,255,80); // arg1 -Red | arg2 - Green | arg3- Blue|arg 4 - alpha
    // imagefilter($img, IMG_FILTER_EMBOSS);
    // imagefilter($img, IMG_FILTER_GAUSSIAN_BLUR);
    // imagefilter($img, IMG_FILTER_SELECTIVE_BLUR);
    // imagefilter($img, IMG_FILTER_SMOOTH,0);
    //imagefilter($img, IMG_FILTER_PIXELATE,3,true); // first param...level >:) --- true /false - for advanced pixelation:)
    imageconvolution($img, $sharpen, 8, 0);


    imagejpeg($img);
    imagedestroy($img);


    //------------------------------------------------
    // Schiriac Robert - RobiXxu
    // http://stud.usv.ro/~rschiriac/
    //------------------------------------------------

?>