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15 years ago
There is function to crop blank edges from image.



<?php

/**

* $image image cursor (from imagecreatetruecolor)

* $backgound image curosr (from imagecolorallocate)

* $paddng int 

*/

function imageCrop($image, $background = false, $padding = 0) {

    if($background)

      $background = imagecolorallocate($image, 255, 255, 255);

    

    $top = imageSY($image);

    $left = imageSX($image);

    $bottom = 0;

    $right = 0;

    

    for ($x = 0 ; $x < imagesx($image) ; $x++) {

        for ($y = 0 ; $y < imagesy($image) ; $y++) {

          

          // if there match

            if(imagecolorat($image, $x, $y) != $background) {

              

              if($x < $left)

                $left = $x;

              if($x > $right)

                $right = $x;

              if($y > $bottom)

                $bottom = $y;

              if($y < $top)

                $top = $y;

        }

        }

    }

    

    $right++;

    $bottom++;

    

    // create new image with padding

    $img = imagecreatetruecolor($right-$left+$padding*2,$bottom-$top+$padding*2);

    // fill the background

    imagefill($img, 0, 0, $background);

    // copy 

    imagecopy($img, $image, $padding, $padding, $left, $top, $right-$left, $bottom-$top);

    

    // destroy old image cursor

    imagedestroy($image);

    return $img;

}

?>
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