PHP and spatial data

Question

Is there way to access spatial (MDSYS.GEOMETRY type) columns from PHP?
With older OCI8 interface I get ADT-error, with never PDO_OCI I don't get anything, neither error or data.
Or is there way to convert geometry columns to/from WKT in pure PL/SQL (I know that in 10g there is Java-based WKT functions but they don't work with XE or older releases of full Oracle)

Answer 1

You can return results from Oracle Spatial as long as they are not geometries. Here are two examples.
1. You can send a spatial query in PHP and return a non-spatial result, for example:
$query ="Select mkt_id
FROM cola_markets
WHERE SDO_RELATE(shape, mdsys.sdo_geometry(2003,NULL,NULL,
mdsys.sdo_elem_info_array(1,1003,3),
mdsys.sdo_ordinate_array(2,1,7,6)),
'mask=INSIDE querytype=WINDOW') = 'TRUE'";
This code returns mkt_id 2, which is INSIDE of the second shape.
2. You can also return coordinates from a SELECTed geometry by using the SDO_UTIL.GETVERTICES built-in function, for example:
<pre>
$query = " SELECT t.X, t.Y
FROM cola_markets c,
TABLE(SDO_UTIL.GETVERTICES(c.shape)) t
where mkt_id = 2";
$statement = Query($query); // Query() is my own function to test and send the query
while(list($x,$y) = oci_fetch_row($statement))
print "x: $x, y: $y<br />";
</pre>
Output is the set of coordinates for the shape geometry of mkt_id 2:
x: 5, y: 1
x: 8, y: 1
x: 8, y: 6
x: 5, y: 7
x: 5, y: 1
Hope this helps.