/**
* Get associative array with exif info from a photo
*
* @param string $path Path to the photo.
* @return array Exif info in associative array.
*/
function readExif($path)
{
//include and call the exifixer script
require_once realpath(PHOTOQ_PATH . 'lib/exif/exif.php');
$fullexif = read_exif_data_raw($path, 0);
//we now retain only the useful (whatever it means ;-) ) info
$ifd0 = PhotoQExif::_filterUseless($fullexif['IFD0']);
$subIfd = PhotoQExif::_filterUseless($fullexif['SubIFD']);
$makerNote = $subIfd['MakerNote'];
unset($subIfd['MakerNote']);
$gps = PhotoQExif::_filterUseless($fullexif['GPS']);
//bring all the arrays to single dimension
$ifd0 = PhotoQHelper::flatten($ifd0);
$subIfd = PhotoQHelper::flatten($subIfd);
$makerNote = PhotoQHelper::flatten($makerNote);
$gps = PhotoQHelper::flatten($gps);
//and finally merge them into a single array
$exif = array_merge($ifd0, $subIfd, $makerNote, $gps);
//update discovered tags
PhotoQExif::_discoverTags($exif);
return $exif;
}
/**
* Reduces multidimensional array to single dimension.
*
* @param array $in
* @return array
*/
function flatten($in)
{
$out = array();
if (is_array($in)) {
foreach ($in as $key => $value) {
if (is_array($value)) {
unset($in[$key]);
$out = array_merge($out, PhotoQHelper::flatten($value));
} else {
$out[$key] = $value;
}
}
}
return $out;
}
