Php 优化mysql查询-foreach循环

我需要用php将大型XML文件解析为mysql（500.000行XML）。但是使用下面的代码，xml文件需要几个小时。 如何对此进行优化？（我想可能是制作一个数组，一次解析到mysql，而不是一次解析一个变量？）

编辑： XML:

---

插入一条记录，然后一次一列地更新多个列，会带来糟糕的性能。您应该为每条记录解析XML中的所有数据，并将其全部插入一个

insert

。这将大大提高性能

此外，如果在插入前检查每个插入的唯一性，则应使用唯一索引修改架构，并使用“插入…忽略…”，检查受影响行的数量以检查是否插入了每一行（如果需要检查）

您可以使用

INSERT

的批处理表单一次插入一批记录

---

如果这还不够，请尝试先将XML解析为CSV，然后使用

加载数据填充

批量插入所有数据。

可能会显示一些XML和表方案。

foreach ($data as $dat) {
        $object = $dat;
        $UID = $object['id'];
        $test = mysql_query("SELECT * FROM reports WHERE UID = '$UID'");
        if ($test['UNIQUEID'] ==null) {

            $temp = array("MEDIA" => "{$name}");
            foreach ($object as $obj){
                mysql_query("INSERT INTO reports
                    (MEDIA, UID)
                    VALUES
                    ('$name', '$UID')");
                foreach ($obj as $ats) {
                    $attname = $ats['name'];

                    mysql_query("UPDATE reports 
                                SET $attname = '$ats'
                                WHERE UID = '$UID'
                                ");

                } 

            }
        }
        echo "Done";

    }

    <object id="382177">
    <attributes>
      <attribute kind="number" name="REVNO">1</attribute>
      <attribute kind="string" name="UNIQUEID">XXX</attribute>
      <attribute kind="number" name="EVENTVERSION">1</attribute>
      <attribute kind="string" name="EVENTASSOCID">4568190</attribute>
      <attribute kind="number" name="EVENTASSOCRELNO">2</attribute>
      <attribute kind="string" name="EVENTTYPE">PageFlow</attribute>
      <attribute format="%Y-%m-%d %H:%M:%S" kind="time" name="EVENTTIME">2014-02-09 09:40:52</attribute>
      <attribute kind="string" name="EVENTMSG">PageLocked=1</attribute>
      <attribute kind="string" name="EVENTUSER">XXX</attribute>
      <attribute kind="string" name="EVENTAPPL">XXX</attribute>
      <attribute kind="string" name="NAME">XXX</attribute>
      <attribute kind="string" name="NEWSROOM">XXX</attribute>
      <attribute kind="string" name="PRODUCT">XXX</attribute>
      <attribute kind="string" name="PUBDATE">11-02-2014</attribute>
      <attribute kind="string" name="ZONE">XXX</attribute>
      <attribute kind="string" name="EDITION">1</attribute>
      <attribute kind="string" name="PAGENAME">XXX</attribute>
      <attribute kind="number" name="PAGENO">1</attribute>
      <attribute kind="string" name="ARTICLE"></attribute>
     </attributes>
  </object>

        foreach ($data as $key) {

        $lat = array();
        $lat = $key->attributes;

        $UID = $key['id'];

        mysql_query("INSERT INTO reports
                    (MEDIA, UID, REVNO, UNIQUEID, EVENTVERSION, EVENTASSOCID, EVENTASSOCRELNO, EVENTTYPE, EVENTTIME, EVENTMSG, EVENTUSER, EVENTAPPL, NAME, NEWSROOM, PRODUCT, PUBDATE, ZONE, EDITION, PAGENAME, PAGENO, ARTICLE, LAYOUTDESK, LAYOUTSTATE, RUNNINGPAGENO, SECTIONNAME, SECTIONNO, LASTOPERATOR, LASTREV, LASTDATAOPERATOR, LASTDATAREV, TYPE, SUBTYPE, LAYOUTTEMPLATE, EDITORIALSOURCEUID)
                    VALUES
                    ('$name', '$UID', '{$lat->attribute[0]}', '{$lat->attribute[1]}', '{$lat->attribute[2]}', '{$lat->attribute[3]}', '{$lat->attribute[4]}', '{$lat->attribute[5]}', '{$lat->attribute[6]}', '{$lat->attribute[7]}', '{$lat->attribute[8]}', '{$lat->attribute[9]}', '{$lat->attribute[10]}', '{$lat->attribute[11]}', '{$lat->attribute[12]}', '{$lat->attribute[13]}', '{$lat->attribute[14]}', '{$lat->attribute[15]}', '{$lat->attribute[16]}', '{$lat->attribute[17]}', '{$lat->attribute[18]}', '{$lat->attribute[19]}', '{$lat->attribute[20]}', '{$lat->attribute[21]}', '{$lat->attribute[22]}', '{$lat->attribute[23]}', '{$lat->attribute[24]}', '{$lat->attribute[25]}', '{$lat->attribute[26]}', '{$lat->attribute[27]}', '{$lat->attribute[28]}', '{$lat->attribute[29]}', '{$lat->attribute[30]}', '{$lat->attribute[31]}')");


    }