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| author | ben <ben@36083f99-b078-4883-b0ff-0f9b5a30f544> | 2008-04-29 15:51:35 +0000 |
|---|---|---|
| committer | ben <ben@36083f99-b078-4883-b0ff-0f9b5a30f544> | 2008-04-29 15:51:35 +0000 |
| commit | 9a14ea8cfd0a5a8621e17a81426100c59a94d9b5 (patch) | |
| tree | 3f3996af6095c85ec6f558da9a6310d91b615146 | |
| parent | 8d9ef94c28b99f60c1cad79d54b5a324bffb2ebf (diff) | |
| download | elgg-9a14ea8cfd0a5a8621e17a81426100c59a94d9b5.tar.gz elgg-9a14ea8cfd0a5a8621e17a81426100c59a94d9b5.tar.bz2 | |
Introducing get_uploaded_file and get_resized_image_from_uploaded_file.
git-svn-id: https://code.elgg.org/elgg/trunk@560 36083f99-b078-4883-b0ff-0f9b5a30f544
| -rw-r--r-- | engine/lib/filestore.php | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/engine/lib/filestore.php b/engine/lib/filestore.php index afc924099..9cd981128 100644 --- a/engine/lib/filestore.php +++ b/engine/lib/filestore.php @@ -470,6 +470,84 @@ } } +
+ /**
+ * Get the contents of an uploaded file.
+ * (Returns false if there was an issue.)
+ *
+ * @param string $input_name The name of the file input field on the submission form
+ * @return mixed|false The contents of the file, or false on failure.
+ */
+ function get_uploaded_file($input_name) {
+
+ // If the file exists ...
+ if (isset($_FILES[$input_name]) && $_FILES[$input_name]['error'] == 0) {
+ return file_get_contents($_FILES[$input_name]['tmp_name']);
+ }
+ return false;
+
+ }
+
+ /**
+ * Gets the jpeg contents of the resized version of an uploaded image
+ * (Returns false if the uploaded file was not an image)
+ *
+ * @param string $input_name The name of the file input field on the submission form
+ * @param int $maxwidth The maximum width of the resized image
+ * @param int $maxheight The maximum height of the resized image
+ * @return false|mixed The contents of the resized image, or false on failure
+ */
+ function get_resized_image_from_uploaded_file($input_name, $maxwidth, $maxheight) {
+ // If our file exists ...
+ if (isset($_FILES[$input_name]) && $_FILES[$input_name]['error'] == 0) {
+
+ // Get the size information from the image
+ if ($imgsizearray = getimagesize($_FILES[$input_name]['tmp_name'])) {
+
+ // Get the contents of the file
+ $filecontents = file_get_contents($_FILES[$input_name]['tmp_name']);
+
+ // Get width and height
+ $width = $imgsizearray[0];
+ $height = $imgsizearray[1];
+ $newwidth = $width;
+ $newhight = $height;
+
+ if ($width > $maxwidth) {
+ $newwidth = $maxwidth;
+ $newheight = floor($height * ($maxwidth / $width));
+ }
+ if ($newheight > $maxheight) {
+ $newheight = $maxheight;
+ $newwidth = floor($newwidth * ($maxheight / $newheight));
+ }
+
+ $accepted_formats = array(
+ 'image/jpeg' => 'jpeg',
+ 'image/png' => 'png',
+ 'image/gif' => 'png'
+ );
+
+ // If it's a file we can manipulate ...
+ if (array_key_exists($imgsizearray['mime'],$accepted_formats)) {
+
+ $function = "imagecreatefrom" . $accepted_formats[$imgsizearray['mime']];
+ $newimage = imagecreatetruecolor($newwidth,$newheight);
+ if (is_callable($function) && $oldimage = $function($_FILES[$input_name]['tmp_name'])) {
+
+ // Resize and return the image contents!
+ imagecopyresized($newimage, $oldimage, 0,0,0,0,$newwidth,$newheight,$width,$height);
+ return imagejpeg($newimage);
+
+ }
+
+ }
+
+ }
+
+ }
+ return false;
+ }
/// Variable holding the default datastore |