Question

I would like to resize images on server side to make thumbnail dynamicaly.
I’m using this code :

<?php
Header("Content-type: image/jpeg"); 
$img_src = $_GET['photo']; 

$size = getimagesize($img_src);

$src_w = $size[0];
$src_h = $size[1]; 

$dst_w = 80;
$dst_h = 80;

$test_h = round(($dst_w / $src_w) * $src_h); 
$test_w = round(($dst_h / $src_h) * $src_w); 


if($src_w > $src_h) {
    $x = $test_w;
    $y = $dst_h;
} elseif($src_h > $src_w) {
    $x = $dst_w;
    $y = $test_h;
}

$img_new = imagecreatefromjpeg($img_src); 
$img_mini = imagecreatetruecolor($x, $y); 
imagecopyresampled($img_mini,$img_new,0,0,0,0,$x,$y,$src_w,$src_h); 
imagejpeg($img_mini); 
?>

But it didn’t work, and I can’t find why. There is no error, juste nothing appeared.
Can anybody help me ?

Thanks;

Answer 1

If you are getting a blank page, then either your script timed out or php memory limit was exceeded. Use ini_set function to set memory_limit and max_execution_time before starting any gd function.

Image manipulations take time as well as memory. So these configurations are important.