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 <?php
//ÓÃÓÚÑéÖ¤ÂëÐòÁÐÉú³ÉµÈ..
function random($length) {
$hash = '';
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
$max = strlen($chars)-1;
$length=4;//³¤¶È×ÔÐÐÉ趨
mt_srand((double)microtime() * 1000000);
for($i = 0; $i < $length; $i++){
$hash .= $chars[mt_rand(0, $max)];
}
return $hash;
}
//²âÊÔÊä³ö£º
//echo random(4);
?>


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<?
class gzg//¸ÆÖиÆÀà
{
        var $x;//ÊôÐÔ
        function gzg()//¹¹Ô캯Êý,ĬÈϲ»³Ô¸ÆÖиÆ
              &n ......

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$conn=mysql_connect ("localhost:3306", "username", "password");
mysql_select_db("DBname");
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$exec="select * from stu";
$result=mysql_query($exec);
while($rs=mysql_fetch_object($result))
{
    echo $rs->id." & ......
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