[英]mysql to php to xml shows blank age
在以XML輸出請求的歌曲標題,藝術家,專輯的列表以及請求者的名稱和他的消息時,我遇到了問題。
我嘗試了這個,但它給了我一個空白頁:
$link = mysql_connect("localhost","dbuser","dbpass");
mysql_select_db("dbname");
$query = "SELECT requestlist.host, requestlist.msg, requestlist.name, songlist.ID, songlist.count_requested, songlist.artist, songlist.title,
songlist.album, songlist.buycd, songlist.date_played, count(*) as cnt FROM requestlist, songlist
WHERE (requestlist.songID = songlist.ID) AND (requestlist.code<700) GROUP BY requestlist.msg, songlist.ID, songlist.count_requested,
songlist.artist, songlist.title, songlist.album, songlist.buycd, songlist.date_played ORDER BY requestlist.msg DESC, songlist.date_played DESC" ;
$results = mysql_query($query);
echo "<request>\n";
while($line = mysql_fetch_assoc($results)) {
echo " <CD>\n";
echo "<singer>" . $line["artist"] . "</singer>\n";
echo "<song>" . $line["title"] . "</song>\n";
echo "<album>". $line["album"] ."</album>\n";
echo "<name>". $line["name"] ."</name>\n";
echo "<shout>" . $line["msg"] . "</shout>\n";
echo "</CD>\n";
}
echo "</request>\n";
mysql_close($link);
我寧願使用simplexml
, xmlwriter
或DOM
來構建該XML,並使用PDO
進行數據庫處理:
$stmt = $db->prepare($query); // define $db as PDO in include-file
$stmt->execute();
$requests = $stmt->fetchAll(PDO::FETCH_ASSOC);
$xml = new SimpleXMLElement("<?xml version="1.0" encoding="UTF-8"?><request></request>");
foreach ($requests as $r) {
$cd = $xml->addChild("CD");
$cd->addchild("singer", $r['artist']);
$cd->addChild("song", $r['title']);
$cd->addChild("album", $r['album']);
$cd->addChild("name", $r['name']);
$cd->addChild("shout", $r['msg']);
}
echo $xml->asXML();
還有一個帶有映射數組的小變量:
$fields = array(
'singer' => 'artist',
'song' => 'title',
# ...
);
foreach ($requests as $r) {
$cd = $xml->addChild("CD");
foreach ($fields as $name => $column)
{
$cd->$name = $r[$column];
}
}
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