/** * Serialize geometries into an EWKT string. * * @param Geometry $geometry * * @return string The Extended-WKT string representation of the input geometries */ public function write(Geometry $geometry) { $srid = $geometry->SRID(); $wkt = ''; if ($srid) { $wkt = 'SRID=' . $srid . ';'; $wkt .= $geometry->out('wkt'); return $wkt; } else { return $geometry->out('wkt'); } }