function isSupportConversion($file, $src_type = '', $dest_type = '') { if (!$src_type) { $imginfo = @getimagesize($file); if (!$imginfo) { throw new lmbFileNotFoundException($file); } $src_type = lmbGdImageContainer::convertImageType($imginfo[2]); } if (!$dest_type) { $dest_type = $src_type; } return lmbGdImageContainer::supportLoadType($src_type) && lmbGdImageContainer::supportSaveType($dest_type); }