This repository contains the OGR/PHP Extension, originally developed by DM Solutions Group.
The original source code (with history!) was retrieved from the CVS repository at cvs.maptools.org:/cvs/maptools/cvsroot using cvssuck, then imported into Git using cvs2git. The imported version is tagged as cvsimport for posterity.
The original webpage/documentation for OGR/PHP is still available at http://dl.maptools.org/dl/php_ogr/php_ogr_documentation.html - this is the same as the file php_ogr_documentation.html
The code is available under a MIT-style license - see LICENSE, which is the original license file from DM Solutions (originally README.TXT).
Currently PHP5 >= 5.4 is supported. The last version known to support PHP 5 <= 5.3 is tagged as php53 for reference.
OGR/PHP (or PHP_OGR) still does a good job of making the OGR library available in PHP, but being stuck in CVS obscurity it seems to no longer be maintained or developed further to take advantage of new features in OGR. By "forking" it onto GitHub I hope that that may change.