# the type you specified, it will convert the image for you.
-
$GLOBALS['mime_to_ext'] = array(
'text/plain' => 'txt',
'text/html' => 'html',
}
if(!move_uploaded_file($_FILES[$key]['tmp_name'], $filename)) {
- die('file upload failed');
+ return false;
}
return $filename;
}
+function path_to_convert() {
+ if(!isset($GLOBALS['path_to_convert'])) {
+ $convert = '/usr/local/bin/convert';
+ if(!file_exists($convert)) {
+ $convert = '/usr/bin/convert';
+ }
+ if(!file_exists($convert)) {
+ $convert = `which convert`;
+ }
+ if($convert == '' || !file_exists($convert)) {
+ die("can't find imagemagick's 'convert' program");
+ }
+
+ $GLOBALS['path_to_convert'] = $convert;
+ }
+
+ return $GLOBALS['path_to_convert'];
+}
+
# returns new filename with .png extension
function gif_to_png($filename, $new_filename = 'just change extension') {
$new_filename .= '.png';
}
- $convert = '/usr/local/bin/convert';
- if(!file_exists($convert)) {
- $convert = '/usr/bin/convert';
- }
- if(!file_exists($convert)) {
- $convert = `which convert`;
- }
- if($convert == '' || !file_exists($convert)) {
- die("can't find imagemagick's 'convert' program");
- }
-
+ $convert = path_to_convert();
+
$command = "$convert " . escapeshellarg($filename) . ' ' . escapeshellarg($new_filename);
exec($command, $dummy, $ret);
return $new_filename;
}
+# make a thumbnail image.
+#
+# Thumbnail will have the same filename, except "_thumb" will be added right
+# before the dot preceding the extension. so foo.png yields foo_thumb.png
+#
+# Thumbnail will retain aspect ratio, and be either $max_width wide or
+# $max_height tall (or, if the aspect is just right, both)
+function make_thumbnail($filename, $max_width = '70', $max_height = '70') {
+ $thumb = ereg_replace('[.]([a-z]+)$', "_thumb.\\1", $filename);
+ if($thumb == $filename) {
+ die("couldn't make thumbnail because filename has no extension.");
+ }
+
+ $convert = path_to_convert();
+
+ # can't be too careful
+ $max_width = ereg_replace('[^0-9]', '', $max_width);
+ if($max_width == '') {
+ $max_width = '70';
+ }
+ $max_height = ereg_replace('[^0-9]', '', $max_height);
+ if($max_height == '') {
+ $max_height = '70';
+ }
+
+ $command = "$convert -geometry ${max_width}x$max_height " . escapeshellarg($filename) . ' ' . escapeshellarg($thumb);
+
+ exec($command, $dummy, $ret);
+ if($ret != 0) {
+ die("Thumbnail creatin failed. convert did exit($ret)");
+ }
+
+ return $thumb;
+}
+
# like save_uploaded_file() (above) except it converts gifs to pngs.
#
# FIXME: if a filename is passed in the end of path, we should check if the file type matches, and if not run convert.