PHP中3种生成XML文件方法的速度比较

来源：互联网发布：哪种理财软件好编辑：程序博客网时间：2024/05/01 07:10

有3种方法,分别是直接写;使用DomDocument;使用SimpleXML;
其实还有第4种:使用XMLWriter,不过我没用过,也懒得试了.
主要是想看看这3种方式哪个速度要快些

直接上代码:

private function directWriteXml(&$data){$xmltext='<?xml version="1.0" encoding="UTF-8" ?>';$xmltext .='<DocumentData>';$xmltext .='<Detail>';$loop=count($data);foreach ($data as $d){$xmltext .=" <Row ID=\" {$d['id']} \"  Name=\" {$d['name']}\" />";}$xmltext .='</Detail>';$xmltext .='</DocumentData>';return $xmltext;}private function useDomDocument(&$data){//  创建一个XML文档并设置XML版本和编码。。$dom=new DomDocument('1.0', 'utf-8');//  创建根节点$detail01 = $dom->createElement('Detail');$dom->appendchild($detail01);foreach ($data as $d) {    $row = $dom->createElement('Row'," ID=\" {$d['id']} \"  Name=\" {$d['name']}\" " );    $detail01->appendchild($row);}return $dom->saveXML();}private function useSimpleXML(&$data){//  创建一个XML文档并设置XML版本和编码。。$string = <<<XML<?xml version='1.0' encoding='utf-8'?><detail01></detail01>XML;$xml = simplexml_load_string($string);foreach ($data as $d) {    $xml->addChild('Row'," ID=\" {$d['id']} \"  Name=\" {$d['name']}\" " );}return $xml->asXML(); ;}

调用时每个都加上大数循环操作,并记录时间

$loop=10000;$xml='';switch($_GET['id']){case 1:$ts=$this->microtime_float();for( $i=0; $i<$loop; $i++)$xml=$this->directWriteXml($depdata);$te=$this->microtime_float();$t=$te-$ts;$this->assign('times',$t);$this->assign('method','直接写');break;case 2:$ts=$this->microtime_float();for( $i=0; $i<$loop; $i++)$xml=$this->useDomDocument($depdata);$te=$this->microtime_float();$t=$te-$ts;$this->assign('times',$t);$this->assign('method','DomDocument');break;case 3:$ts=$this->microtime_float();for( $i=0; $i<$loop; $i++)$xml=$this->useSimpleXML($depdata);$te=$this->microtime_float();$t=$te-$ts;$this->assign('times',$t);$this->assign('method','SimpleXML');break;}echo $xml;

实测结果不出所料,直接写最快,耗时只有其他方式的1/3左右. 而其他2种方法差不多,相比之下SimpleXML要快一些.