php在MYsql中查询的问题？？
我想在数据中根据某个值查询对应的值.例：知道user的值然后显示pwd的值。我在phpamdin里面测试的代码是：
$sql = 'SELECT pwd'<br />
. ' FROM `appdata` '<br />
. ' WHERE user = \'jimmy@qq.com\' LIMIT 0, 30';<?php<br />
include_once "logindatabase.php";<br />
$cmd = mysql_query(SELECT * FROM appdata WHERE user =jimmy@qq.com);<br />
$rec = mysql_fetch_array($cmd);<br />
echo $rec[Pwd];<br />
?>
