IMG_FILTER_GRAYSCALE and IMG_FILTER_NEGATE : imagefilter « Graphics Image « PHP






  1. PHP
  2. Graphics Image
  3. imagefilter

IMG_FILTER_GRAYSCALE and IMG_FILTER_NEGATE

 
<?php
    $image = imagecreatefrompng("space.png");
    imagefilter($image, IMG_FILTER_GRAYSCALE);
    imagefilter($image, IMG_FILTER_NEGATE);
    header("content-type: image/png");
    imagepng($image);
    imagedestroy($image);
?>








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1.Special Effects Using imagefilter( ): lighten picture just a little:
2.IMG_FILTER_COLORIZE
3.IMG_FILTER_CONTRAST
4.IMG_FILTER_EDGEDETECT and IMG_FILTER_EMBOSS filters
5.IMG_FILTER_GAUSSIAN_BLUR and IMG_FILTER_SELECTIVE_BLUR
6.smooths the picture just a little