Problem with Auto-thumbnail Creation

PHP programming forum. Ask questions or help people concerning PHP code. Don't understand a function? Need help implementing a class? Don't understand a class? Here is where to ask. Remember to do your homework!

Moderator: General Moderators

Post Reply
sandeepraul
Forum Newbie
Posts: 2
Joined: Mon Oct 09, 2006 8:58 am

Problem with Auto-thumbnail Creation

Post by sandeepraul »

I am trying to create thumnail image using following function. This function is giving me correct output on my local machine (windows OS). I have PHP4 and gd2 library installed on my local machine.

The server machine is having PHP5 and gd2 library installed.

The problem i am facing is when the same code is executed on the server (windows OS) the thumnail image for image size greater than 65KB is getting created but for images less than 65KB, gives black image box. So please tell me what is the exact problem?


function createthumb($name,$filename,$new_w,$new_h)
{


$system1=explode(".",$name);

$count = count($system1) ;


$system[1] = $system1[$count-1];

//$name = strtolower($name1);

if (preg_match("/jpg|jpeg|JPG|JPEG/",$system[1])){
echo "<br>";
// echo "hallo==" . $name ;
echo "<br>";
$src_img=imagecreatefromjpeg($name);

echo "src_img inside if == " .$src_img ;
echo "<br>";

}
if (preg_match("/png|PNG/",$system[1])){$src_img=imagecreatefrompng($name);}


$old_x=imageSX($src_img);
$old_y=imageSY($src_img);


$thumb_w=$new_w;
$thumb_h=$new_h;


$dst_img=ImageCreateTrueColor($thumb_w,$thumb_h) or die("not working");
$trial = imagecopyresized($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y);

echo "dst_img == " . $dst_img ;
echo "<br>";
echo "trial == " . $src_img ;
echo "<br>";


if (preg_match("/png/",$system[1]))
{

imagepng($dst_img,$filename);
} else {

imagejpeg($dst_img,$filename);
}
imagedestroy($dst_img);
imagedestroy($src_img);
}
Post Reply