[請益] inner child 問題

[SoooRrrr (SOR)]

如題目
有段程式碼，是麻煩同學幫忙寫的，
但是看不太懂，
他最近有點忙，
所以來這邊請教一下各位，


<?

include 'db.php';

header('Content-type: text/xml');

mysql_query("SET NAMES 'utf8'");

$us = mysql_query("select * from runtracker ORDER BY score asc", $con);

//$rows_num = mysql_num_rows($us);

// create a new XML document
$doc = new DomDocument('1.0', 'UTF-8');

// add root node
$root = $doc->createElement('child_item');
$root = $doc->appendChild($root);

while($data=mysql_fetch_row($us))
{
    $inner = $doc->createElement('item');
    $inner = $root->appendChild($inner);

    // add a child node for each field
    $child = $doc->createElement('id');
    $child = $inner->appendChild($child);
    $value = $doc->createTextNode("$data[0]");
    $value = $child->appendChild($value);

    $child = $doc->createElement('name');
    $child = $inner->appendChild($child);
    $value = $doc->createTextNode("$data[1]");
    $value = $child->appendChild($value);

        $d = round((double) $data[2],4);

    $child = $doc->createElement('score');
    $child = $inner->appendChild($child);
    $value = $doc->createTextNode("$d");
    $value = $child->appendChild($value);

    $child = $doc->createElement('rdate');
    $child = $inner->appendChild($child);
    $value = $doc->createTextNode("$data[3]");
    $value = $child->appendChild($value);

    $child = $doc->createElement('rankid');
    $child = $inner->appendChild($child);
    $value = $doc->createTextNode("$data[4]");
    $value = $child->appendChild($value);

}

$xml_string = $doc->saveXML();
echo $xml_string;

mysql_close($con);
?>


db.php 是創建資料庫而已，

麻煩各位了!!

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→ danny8376:不就很基本的XML操作嗎 說實話跟PHP不是太有關係
→ danny8376:creatElement就是生一個tag  $A->appendChild($B)
→ danny8376:這部份則是把$B加進$A底下當子tag
→ MOONRAKER:整段貼上來也太coarse了
→ danny8376:db.php也一起貼上來應該不錯? 順便附SQL的IP XDD
→ MOONRAKER:有可能是192.168.1.1這樣 XP
→ danny8376:如果是這樣就可惜了呢(X
→ danny8376:不過我手上資料庫不外乎 localhost 192.168.3.1
→ danny8376:沒一個放在能公共存取的範圍呢XD
→ danny8376:不過192.168.1.1也是蠻強的拉 哪台Router有支援MySQL啊
→ danny8376:(自架的可能性不高吧XDD)
→ MOONRAKER:XD 問同學最快。不然php.net DomDocument對照看也懂了。