Speed up parsing XML documents with DOMDocument class in PHP and with namespaces -

i have 6 xml documents need parse php. every file has 50000 elements therefore need fast parser chose domdocument class. example of xml file is:

<?xml version="1.0" encoding="utf-8" standalone="yes"?> <ns2:pinscountrycodeids xmlns:ns2="http://apis-it.hr/umu/2015/types/kp">     <ns2:pincountrycodeid>         <ns2:countrycodeid>hr</ns2:countrycodeid>         <ns2:pinprimatelja>000000000</ns2:pinprimatelja>     </ns2:pincountrycodeid>     <ns2:pincountrycodeid>         <ns2:countrycodeid>hr</ns2:countrycodeid>         <ns2:pinprimatelja>000000001</ns2:pinprimatelja>     </ns2:pincountrycodeid>     <ns2:pincountrycodeid>         <ns2:countrycodeid>hr</ns2:countrycodeid>         <ns2:pinprimatelja>000000002</ns2:pinprimatelja>     </ns2:pincountrycodeid> </ns2:pinscountrycodeids> 

the best come code:

$input_file=scandir($oib_path);//scanning directory files foreach ($input_file $input_name){     if($input_name=="." || $input_name=="..")         continue;     $oib_file=$oib_path . $input_name;      $doc = new domdocument();     $doc->load( $oib_file );      $doc->savexml();     foreach ($doc->getelementsbytagnamens('http://apis-it.hr/umu/2015/types/kp', 'pinprimatelja') $element) {         echo  $element->nodevalue, ', <br> ';     }             } 

but slow takes more 20 minutes parse 6 files.

what can improve it?

xpath queries faster doing normal traversal using dom.

try below code , let me know if improves performance.

<?php  $input_file=scandir($oib_path);//scanning directory files  foreach ($input_file $input_name){      if($input_name=="." || $input_name=="..")         continue;     $oib_file=$oib_path . $input_name;      $doc = new domdocument();     $doc->load( $oib_file );      $xpath = new domxpath($doc);     $xpath->registernamespace('x', 'http://apis-it.hr/umu/2015/types/kp');      $elements = $xpath->query('//x:pincountrycodeid/x:pinprimatelja');      if ($elements->length > 0) {         foreach ($elements $element) {             echo $element->nodevalue.'<br>';         }      }  }  ?>