+ return $filename;
+}
+
+/**
+ * Create a file in the upload folder with given content.
+ *
+ * If there is an error, then the key 'error' will exist with the error message.
+ * If success, then the key 'file' will have the unique file path, the 'url' key
+ * will have the link to the new file. and the 'error' key will be set to false.
+ *
+ * This function will not move an uploaded file to the upload folder. It will
+ * create a new file with the content in $bits parameter. If you move the upload
+ * file, read the content of the uploaded file, and then you can give the
+ * filename and content to this function, which will add it to the upload
+ * folder.
+ *
+ * The permissions will be set on the new file automatically by this function.
+ *
+ * @since 2.0.0
+ *
+ * @param string $name
+ * @param null $deprecated Not used. Set to null.
+ * @param mixed $bits File content
+ * @param string $time Optional. Time formatted in 'yyyy/mm'.
+ * @return array
+ */
+function wp_upload_bits( $name, $deprecated, $bits, $time = null ) {
+ if ( empty( $name ) )
+ return array( 'error' => __( 'Empty filename' ) );
+
+ $wp_filetype = wp_check_filetype( $name );
+ if ( !$wp_filetype['ext'] )
+ return array( 'error' => __( 'Invalid file type' ) );
+
+ $upload = wp_upload_dir( $time );
+
+ if ( $upload['error'] !== false )
+ return $upload;
+
+ $filename = wp_unique_filename( $upload['path'], $name );
+
+ $new_file = $upload['path'] . "/$filename";
+ if ( ! wp_mkdir_p( dirname( $new_file ) ) ) {
+ $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname( $new_file ) );
+ return array( 'error' => $message );
+ }
+
+ $ifp = @ fopen( $new_file, 'wb' );
+ if ( ! $ifp )
+ return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );
+
+ @fwrite( $ifp, $bits );
+ fclose( $ifp );
+ // Set correct file permissions
+ $stat = @ stat( dirname( $new_file ) );
+ $perms = $stat['mode'] & 0007777;
+ $perms = $perms & 0000666;
+ @ chmod( $new_file, $perms );
+
+ // Compute the URL
+ $url = $upload['url'] . "/$filename";
+
+ return array( 'file' => $new_file, 'url' => $url, 'error' => false );
+}
+
+/**
+ * Retrieve the file type based on the extension name.
+ *
+ * @package WordPress
+ * @since 2.5.0
+ * @uses apply_filters() Calls 'ext2type' hook on default supported types.
+ *
+ * @param string $ext The extension to search.
+ * @return string|null The file type, example: audio, video, document, spreadsheet, etc. Null if not found.
+ */
+function wp_ext2type( $ext ) {
+ $ext2type = apply_filters('ext2type', array(
+ 'audio' => array('aac','ac3','aif','aiff','mp1','mp2','mp3','m3a','m4a','m4b','ogg','ram','wav','wma'),
+ 'video' => array('asf','avi','divx','dv','mov','mpg','mpeg','mp4','mpv','ogm','qt','rm','vob','wmv', 'm4v'),
+ 'document' => array('doc','docx','pages','odt','rtf','pdf'),
+ 'spreadsheet' => array('xls','xlsx','numbers','ods'),
+ 'interactive' => array('ppt','pptx','key','odp','swf'),
+ 'text' => array('txt'),
+ 'archive' => array('tar','bz2','gz','cab','dmg','rar','sea','sit','sqx','zip'),
+ 'code' => array('css','html','php','js'),
+ ));
+ foreach ( $ext2type as $type => $exts )
+ if ( in_array($ext, $exts) )
+ return $type;
+}
+
+/**
+ * Retrieve the file type from the file name.
+ *
+ * You can optionally define the mime array, if needed.
+ *
+ * @since 2.0.4
+ *
+ * @param string $filename File name or path.
+ * @param array $mimes Optional. Key is the file extension with value as the mime type.
+ * @return array Values with extension first and mime type.
+ */
+function wp_check_filetype( $filename, $mimes = null ) {
+ if ( empty($mimes) )
+ $mimes = get_allowed_mime_types();
+ $type = false;
+ $ext = false;
+
+ foreach ( $mimes as $ext_preg => $mime_match ) {
+ $ext_preg = '!\.(' . $ext_preg . ')$!i';
+ if ( preg_match( $ext_preg, $filename, $ext_matches ) ) {
+ $type = $mime_match;
+ $ext = $ext_matches[1];
+ break;
+ }
+ }