+function parseLatLon($sQuery)
+{
+ $sFound = null;
+ $fQueryLat = null;
+ $fQueryLon = null;
+
+ if (preg_match('/\\s*([NS])[ ]+([0-9]+[0-9.]*)[° ]+([0-9.]+)?[′\']*[, ]+([EW])[ ]+([0-9]+)[° ]+([0-9]+[0-9.]*)[′\']*\\s*/', $sQuery, $aData)) {
+ /* 1 2 3 4 5 6
+ * degrees decimal minutes
+ * N 40 26.767, W 79 58.933
+ * N 40°26.767′, W 79°58.933′
+ */
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2] + $aData[3]/60);
+ $fQueryLon = ($aData[4]=='E'?1:-1) * ($aData[5] + $aData[6]/60);
+ } elseif (preg_match('/\\s*([0-9]+)[° ]+([0-9]+[0-9.]*)?[′\']*[ ]+([NS])[, ]+([0-9]+)[° ]+([0-9]+[0-9.]*)?[′\' ]+([EW])\\s*/', $sQuery, $aData)) {
+ /* 1 2 3 4 5 6
+ * degrees decimal minutes
+ * 40 26.767 N, 79 58.933 W
+ * 40° 26.767′ N 79° 58.933′ W
+ */
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[3]=='N'?1:-1) * ($aData[1] + $aData[2]/60);
+ $fQueryLon = ($aData[6]=='E'?1:-1) * ($aData[4] + $aData[5]/60);
+ } elseif (preg_match('/\\s*([NS])[ ]([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+)[″"]*[, ]+([EW])[ ]([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+)[″"]*\\s*/', $sQuery, $aData)) {
+ /* 1 2 3 4 5 6 7 8
+ * degrees decimal seconds
+ * N 40 26 46 W 79 58 56
+ * N 40° 26′ 46″, W 79° 58′ 56″
+ */
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2] + $aData[3]/60 + $aData[4]/3600);
+ $fQueryLon = ($aData[5]=='E'?1:-1) * ($aData[6] + $aData[7]/60 + $aData[8]/3600);
+ } elseif (preg_match('/\\s*([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+[0-9.]*)[″" ]+([NS])[, ]+([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+[0-9.]*)[″" ]+([EW])\\s*/', $sQuery, $aData)) {
+ /* 1 2 3 4 5 6 7 8
+ * degrees decimal seconds
+ * 40 26 46 N 79 58 56 W
+ * 40° 26′ 46″ N, 79° 58′ 56″ W
+ * 40° 26′ 46.78″ N, 79° 58′ 56.89″ W
+ */
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[4]=='N'?1:-1) * ($aData[1] + $aData[2]/60 + $aData[3]/3600);
+ $fQueryLon = ($aData[8]=='E'?1:-1) * ($aData[5] + $aData[6]/60 + $aData[7]/3600);
+ } elseif (preg_match('/\\s*([NS])[ ]([0-9]+[0-9]*\\.[0-9]+)[°]*[, ]+([EW])[ ]([0-9]+[0-9]*\\.[0-9]+)[°]*\\s*/', $sQuery, $aData)) {
+ /* 1 2 3 4
+ * degrees decimal
+ * N 40.446° W 79.982°
+ */
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2]);
+ $fQueryLon = ($aData[3]=='E'?1:-1) * ($aData[4]);
+ } elseif (preg_match('/\\s*([0-9]+[0-9]*\\.[0-9]+)[° ]+([NS])[, ]+([0-9]+[0-9]*\\.[0-9]+)[° ]+([EW])\\s*/', $sQuery, $aData)) {
+ /* 1 2 3 4
+ * degrees decimal
+ * 40.446° N 79.982° W
+ */
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[2]=='N'?1:-1) * ($aData[1]);
+ $fQueryLon = ($aData[4]=='E'?1:-1) * ($aData[3]);
+ } elseif (preg_match('/(\\s*\\[|^\\s*|\\s*)(-?[0-9]+[0-9]*\\.[0-9]+)[, ]+(-?[0-9]+[0-9]*\\.[0-9]+)(\\]\\s*|\\s*$|\\s*)/', $sQuery, $aData)) {
+ /* 1 2 3 4
+ * degrees decimal
+ * 12.34, 56.78
+ * 12.34 56.78
+ * [12.456,-78.90]
+ */
+ $sFound = $aData[0];
+ $fQueryLat = $aData[2];
+ $fQueryLon = $aData[3];
+ } else {
+ return false;
+ }
+
+ return array($sFound, $fQueryLat, $fQueryLon);
+}
+