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JPEG Directory thumbnail system

JPEG Directory thumbnail system

thumbs.php
<?php 
/* 
Will generate a pages width of 
thumbnailed GIF's and JPG's 
from a secified directory.  Will work 
in a directory with other files in it 
with no problems. 
Thumbnail variables are set in gen.php 

*/ 

// Comments will be throughout 

// Set variables 
$default_dir = "./images"; // Relative to current location 


// Directory Scan 
if(!($dp = opendir($default_dir))) die("Cannot open $dir"); 
// Place images into image tag 
while($file = readdir($dp)){ 
    if($file != '.' && $file != '..' && stristr($file,"jpg")) echo "<a href=\"$default_dir/$file\"><img src=\"./gen.php?$default_dir/$file\"></a>\r\n"; 
} 

closedir($dp); 


?> 
end thumbs.php

gen.php

<?php 
/* 
Will generate a pages width of 
thumbnailed GIF's and JPG's 
from a secified directory.  Will work 
in a directory with other files in it 
with no problems.  Part 2.  The image 
creator. 
Aspect ratio is not supported. 

*/ 

// Comments will be throughout 

$t_width = 100;   // Thumbnail width 
$t_height = 100;  // Thumbnail height 

// get and display jpeg images 
if(stristr($QUERY_STRING,".jpg")){ 
     header("Content-type: image/jpeg"); 
     $srcimage = imagecreatefromjpeg($QUERY_STRING); 
     $destimage = imagecreate($t_width,$t_height); 
     $width = imageSX($srcimage); 
     $height = imageSY($srcimage); 
     imagecopyresized ($destimage,$srcimage,0,0,0,0,$t_width,$t_height,$width,$height); 
     ImageJPEG($destimage); 
     ImageDestroy($destimage); 
} 
/* 
//Support for GIF unavailable at this time 

elseif(stristr($QUERY_STRING,".gif")){ 
     header("Content-type: image/gif"); 
     $srcimage = imagecreatefromgif($QUERY_STRING); 
     $destimage = imagecreate(100,100); 
     $width = imageSX($srcimage); 
     $height = imageSY($srcimage); 
     imagecopyresized ($destimage,$srcimage,0,0,0,0,$t_width,$t_height,$width,$height); 
     ImageGIF($destimage); 
     ImageDestroy($destimage);     
} 
*/ 

// on a problem geneterate an image with ERROR in it 
else { 
$im = imagecreate(100,100); 
$blue = imagecolorallocate($im,0,0,200); 
$red = imagecolorallocate($im,255,0,0); 
imagestring($im,2,2,5,"ERROR",$red); 
imageGIF($im); 
imagedestroy($im); 
} 

?>
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