OGR

The ogr file extension is associated with the C++ programming language.

The ogr file stores a C++ open source library (and command-line tools) providing read (and sometimes write) access to a variety of vector file formats including ESRI Shapefiles, S-57, SDTS, PostGIS, Oracle Spatial, and Mapinfo mid/mif and TAB formats.

The C API is generally easy to call from other languages which allow call out to DLLs functions, such as Visual Basic, or Delphi.

The OGR/PHP extension enables PHP users to access the functionalities included in the OGR library. This extension can be used as built-in PHP or as dynamic library (".dll" on Windows or ".so" on Unix).

This extension was developed and is currently being maintained by DM Solutions Group. Special thanks go to Lars V. Nielsen and Hvenegaard & Meklenborg for funding the initial development of this extension and allowing it to remain open source.