[SOLVED] image creation freezes under werid condition

[bkswindell]

Hello, thanks for taking the time to help.  Ive designed a code to create an image that uses user input of 8 or less chars, and converts it to an array and displays the correct image for each char.  So far the code works 95% it creates the image ok execpt for a few conditions. Ok so

 

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=12345678  Works

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=1  Works

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=12  Works

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=123  Freezes  ???

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=1234  Works

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=12345  Works

and the rest works up to 12345678 and the other condition:

 

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=%20%20%20%20%20%20%201  Works

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=%20%20%20%20%20%2012  Freezes  ???

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=%20%20%20%20%20123  Works

And so on to %201.

Im think it has some to do with the math but im not finding and problems.  Any help would be much appricated.  Also feel free to do and testing of other contitions.

 

Brad

 

<?php  

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

$image = imagecreatefromgif('emp.gif');  
$size = getimagesize('emp.gif');  

$strings = $_GET['strings'];

$len = strlen($strings);
$cur = 0;
$characterarray = array();
while($cur < $len){
$char = $strings{$cur};
array_push($characterarray,$char);
$cur = $cur + 1;
}

/* "*---*"  "      --" */

$car1 = imagecreatefromgif($characterarray[0].'.gif');
$car2 = imagecreatefromgif($characterarray[1].'.gif');
$car3 = imagecreatefromgif($characterarray[2].'.gif');
$car4 = imagecreatefromgif($characterarray[3].'.gif');
$car5 = imagecreatefromgif($characterarray[4].'.gif');
$car6 = imagecreatefromgif($characterarray[5].'.gif');
$car7 = imagecreatefromgif($characterarray[6].'.gif');
$car8 = imagecreatefromgif($characterarray[7].'.gif');

$dest_x = 17;  
$dest_y = 33;
$dest_x1 = 17;  
$dest_x2 = 43;  
$dest_x3 = 69;  
$dest_x4 = 95;  
$dest_x5 = 121;  
$dest_x6 = 147;  
$dest_x7 = 173;  
$dest_x8 = 199;  

imagecopymerge($image, $car1, $dest_x1, $dest_y, 0, 0, imagesx($car1), imagesy($car1), 100);
imagecopymerge($image, $car2, $dest_x2, $dest_y, 0, 0, imagesx($car2), imagesy($car2), 100);
imagecopymerge($image, $car3, $dest_x3, $dest_y, 0, 0, imagesx($car3), imagesy($car3), 100);
imagecopymerge($image, $car4, $dest_x4, $dest_y, 0, 0, imagesx($car4), imagesy($car4), 100);
imagecopymerge($image, $car5, $dest_x5, $dest_y, 0, 0, imagesx($car5), imagesy($car5), 100);
imagecopymerge($image, $car6, $dest_x6, $dest_y, 0, 0, imagesx($car6), imagesy($car6), 100);
imagecopymerge($image, $car7, $dest_x7, $dest_y, 0, 0, imagesx($car7), imagesy($car7), 100);
imagecopymerge($image, $car8, $dest_x8, $dest_y, 0, 0, imagesx($car8), imagesy($car8), 100);

imagejpeg($image);

    $filename = 

$characterarray[0].$characterarray[1].$characterarray[2].$characterarray[3].$characterarray[4].$characterarray[

5].$characterarray[6].$characterarray[7].".jpg";

    if (is_file($filename)) {
        readfile($filename);
        exit;
    }


    imagejpeg($image,$filename);
  
imagedestroy($image); 

imagedestroy($car1);
imagedestroy($car2);
imagedestroy($car3);
imagedestroy($car4);
imagedestroy($car5);
imagedestroy($car6);
imagedestroy($car7);
imagedestroy($car8);


?>

[monk.e.boy]

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=888? Very odd.

 

 

My guess would be the GD has a bug in it. Try doing the same stuff but with .bmps and save it as a bmp as well.

 

jpg and png have different types of compression which may be throwing a weird bug?

 

monk.e.boy

 

[bkswindell]

Ok ive found out that the images that is creating is actuly ok its the image that is actuly displayed on the screen...

 

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/test4.php?strings=256

 

http://bkswindell.dyndns.org:8091/dev/project/trunk/php/256.jpg

 

This is very weird. Its like its not able to complete the process for some reason.  But it works on every other image.

[monk.e.boy]

So maybe dump the image to disk then display it in a normal HTML page?

 

Or is this what you're doing anyway?

 

Sounds like another PHP bug ;-)

 

monk.e.boy

[bkswindell]

Yea thats what I was going to do... Thanks.