RE: [PHP] Re: Making Thumbnails
| From: | Tom Walsh | Date: | Mon, 24 Jul 2000 19:55:40 +0000 |
| Subject: | RE: [PHP] Re: Making Thumbnails | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-7959@lists.php.net to get a copy of this message | ||
Found this somewhere... I use it in modified form...
Credit Rasmus Lerdorf
<?
/*
* The thumbnail function uses the pnmscale program from
* the popular Netpbm image manipulation tools package
* to create a thumbnail of the given image. If a thumbnail
* already exists for the image, the function simply returns.
*/
cfunction thumbnail($filename) {
global $theight;
/* Define where to find the various external binaries we need
*/
$djpeg = "/usr/local/bin/djpeg"; /* decompresses a jpeg to ppm
*/
$cjpeg = "/usr/local/bin/cjpeg"; /* compreses a ppm to jpeg
format */
$pnmscale = "/usr/local/netpbm/pnmscale"; /* scales a ppm image
*/
$giftopnm = "/usr/local/netpbm/giftopnm"; /* convert a gif to
ppm */
$ppmtogif = "/usr/local/netpbm/ppmtogif"; /* convert a ppm to
gif */
$ppmquant = "/usr/local/netpbm/ppmquant"; /* colour quantize a
ppm */
$tdir = dirname($filename)."/thumbnails"; /* thumbnail directory
*/
if(!filetype($tdir)) {
if(!@mkdir($tdir,0777)) {
echo "Unable to create $tdir dir - check
permissions<br>\n";
return;
}
}
$tfile = $tdir."/".basename($filename); /* thumbnail file
*/
if(!filesize($tfile)) {
if(ereg("\.gif$",$filename)) { /* Look for .gif extension
*/
exec("$giftopnm $filename | $pnmscale -height $theight
".
"| $ppmquant 256 | $ppmtogif -interlace > $tfile");
} elseif(ereg("\.jpe?g",$filename)) { /* Look for .jpg or
.jpeg */
exec("$djpeg $filename | $pnmscale -height $theight | ".
"$cjpeg -outfile $tfile");
} else { /* not a GIF or JPG file */
return("");
}
}
return($tfile);
}
/* If the album variable isn't set, show the album list */
if(!$album) {
$title = "Photo Albums";
$page = "albums";
include "include/header.inc";
/* Get a list of the available albums */
$albums = mysql_query("select filename,album,count(*) as
num_albums".
" from photos group by album");
echo "<table align=center>\n";
/* Loop through each album */
while($row=mysql_fetch_row($albums)) {
$row[1] = stripslashes($row[1]);
$thumb = thumbnail($row[0]);
if(strlen($thumb)) {
echo "<tr><td><a
href=\"$PHP_SELF?album=".urlencode($row[1]);
$size = getimagesize($thumb);
echo "\"><img src=\"$thumb\" border=0
$size[3]></a></td>";
echo " <td><font
size=+1><b>".$row[1]."</b></font><br>";
echo "$row[2] photos<br></td></tr>\n";
}
}
echo "</table>\n";
mysql_free_result($albums);
}
/* Ok, an album was selected, show the thumbnails for this album */
else {
$title = stripslashes($album);
$page = "thumbnails";
include "include/header.inc";
$pics = mysql_query("select filename,text from photos where ".
"album='$album'");
$album=stripslashes($album);
echo "<center>\n";
while($row=mysql_fetch_row($pics)) {
if($photo==$row[0]) {
$desc=stripslashes($row[1]);
}
$thumb = thumbnail($row[0]);
if(strlen($thumb)) {
echo "<a href=\"$PHP_SELF?album=".urlencode($album);
$size = getimagesize($thumb);
echo "&photo=$row[0]\"><img src=$thumb border=0
$size[3]></a>\n";
}
flush(); /* Force web server to flush buffer */
}
echo "</center>\n";
/* If a picture was selected as well, show the picture */
if($photo) {
$size=getimagesize($photo);
echo "<center><img src=\"$photo\"
$size[3]><br>$desc</center>\n";
}
mysql_free_result($pics);
}
include "include/footer.inc";
?>
>