note 63736 modified in function.simplexml-element-xpath by danbrown

xpath returning references to the parent simplexml object can bite you performance wise when processing large trees. this bit me big time so looking for a solution I came up with a simple way to speed up the code. 'dereferencing' will yield instant results, code will be lighting fast. sacrifice is losing the reference to the parent object, for simple read-only operation this should be ok. <?php $data = 'data.xml'; $rs = simplexml_load_file($data); foreach($rs->xpath('//row') as $rsrow){ // 'derefence' into a seperate xml tree for performance $row = simplexml_load_string($rsrow->asXML()); $v = $row->xpath('//field[@name="id"]'); } ?> --was-- xpath returning references to the parent simplexml object can bite you performance wise when processing large trees. this bit me big time so looking for a solution I came up with a simple way to speed up the code. 'dereferencing' will yield instant results, code will be lighting fast. sacrifice is losing the reference to the parent object, for simple read-only operation this should be ok. <?php $data = 'data.xml'; $rs = simplexml_load_file($data); foreach($rs->xpath('//row') as $rsrow){ // 'derefence' into a seperate xml tree for performance $row = simplexml_load_string($rsrow->asXML()); $v = $row->xpath('//field[@name="id"]'); } ?> http://php.net/manual/en/function.simplexml-element-xpath.php