Efficiency comparison of three methods for generating xml files in php

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Release: 2016-07-25 09:08:15
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  1. private function directWriteXml(&$data){
  2. $xmltext='';
  3. $xmltext .= '';
  4. $xmltext .='';
  5. $loop=count($data);
  6. foreach ($data as $d){
  7. $xmltext .=" ";
  8. }
  9. $xmltext .='';
  10. $xmltext .=' ';
  11. return $xmltext;
  12. }
  13. private function useDomDocument(&$data){
  14. // Create an XML document and set the XML version and encoding. .
  15. $dom=new DomDocument('1.0', 'utf-8');
  16. // Create root node
  17. $detail01 = $dom->createElement('Detail');
  18. $dom->appendchild($detail01 );
  19. foreach ($data as $d) {
  20. $row = $dom->createElement('Row'," ID=" {$d['id']} " Name=" {$d['name ']}" " );
  21. $detail01->appendchild($row);
  22. }
  23. return $dom->saveXML();
  24. }
  25. private function useSimpleXML(&$data){
  26. // Create an XML Document and set XML version and encoding. .
  27. $string = <<
  28. XML;
  29. $xml = simplexml_load_string ($string);
  30. foreach ($data as $d) {
  31. $xml->addChild('Row'," ID=" {$d['id']} " Name=" {$d['name ']}" " );
  32. }
  33. return $xml->asXML(); ;
  34. }
  35. ?>
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When calling, add a large number of loop operations to each one, and record the time .

  1. $loop=10000;
  2. $xml='';
  3. switch($_GET['id']){
  4. case 1:
  5. $ts=$this->microtime_float( );
  6. for( $i=0; $i<$loop; $i++)
  7. $xml=$this->directWriteXml($depdata);
  8. $te=$this->microtime_float();
  9. $t =$te-$ts;
  10. $this->assign('times',$t);
  11. $this->assign('method','write directly');
  12. break;
  13. case 2:
  14. $ ts=$this->microtime_float();
  15. for( $i=0; $i<$loop; $i++)
  16. $xml=$this->useDomDocument($depdata);
  17. $te=$this- >microtime_float();
  18. $t=$te-$ts;
  19. $this->assign('times',$t);
  20. $this->assign('method','DomDocument');
  21. break;
  22. case 3:
  23. $ts=$this->microtime_float();
  24. for( $i=0; $i<$loop; $i++)
  25. $xml=$this->useSimpleXML($depdata) ;
  26. $te=$this->microtime_float();
  27. $t=$te-$ts;
  28. $this->assign('times',$t);
  29. $this->assign('method ','SimpleXML');
  30. break;
  31. }
  32. echo $xml;
  33. ?>
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Actual test results: Direct writing is the fastest, and the time consumption is only about 1/3 of other methods. The other two methods are almost the same, and SimpleXML is faster in comparison.



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