rifilare immagini

[modografico]

così è più veloce

<?php
$image     = imagecreatefrompng("ada.png");
$arr    = getimagesize("ada.png");

$width    = $arr[0];
$height    = $arr[1];

//top
for($y = 0; $y < $height; $y++)
{
    for($x = 0; $x < $width; $x++)
    {
    if(imagecolorat($image, $x ,$y) != 16777215 ){
            $top=$y;
            $x=$width;$y=$height;
        }
    }
}
//Bottom
for($y = $height-1; $y > 0; $y--)
{
    for($x = 0; $x < $width; $x++)
    {
    if(imagecolorat($image, $x ,$y) != 16777215 ){
            $bottom=$y+1;
            $x=$width;$y=0;
        }
    }
}
//Left
for($x = 0; $x < $width; $x++)
{
    for($y = $top; $y < $bottom; $y++)
    {
    if(imagecolorat($image, $x ,$y) != 16777215 ){
            $left=$x;
            $x=$width;$y=$height;
        }
    }
}
//Right
for($x = $width-1; $x > $left; $x--)
{
    for($y = $top; $y < $bottom; $y++)
    {
    if(imagecolorat($image, $x ,$y) != 16777215 ){
            $right=$x+1;
            $x=0;$y=$height;
        }
    }
}
$newwidth = $right-$left;
$newheight = $bottom-$top;

// Content type
header('Content-type: image/jpeg');

// Load
$thumb = imagecreatetruecolor($newwidth, $newheight);

// Resize
imagecopyresized ($thumb, $image, 0, 0, $left , $top  , $newwidth, $newheight, $newwidth, $newheight);

// Output
imagepng($thumb);
?>

:quote: