$sql = "SELEVT COUNT(*) FROM user WHERE name = '$name' ";
$result = $db->query($sql);
$row = mysql_fetch_row($result);
if($row[0] > 0)
{
echo "<script language='javascript'>alert('用户已经存在');history.go(-1);</script>";
exit();
}
$sql="insert into user set name='$name' , password='$password' , mail='$mail' , xie='$xie' , diz='$diz' , number=$number";
$result = $db->query($sql);
$row = mysql_fetch_row($result);
if($row[0] > 0)
{
echo "<script language='javascript'>alert('用户已经存在');history.go(-1);</script>";
exit();
}
$sql="insert into user set name='$name' , password='$password' , mail='$mail' , xie='$xie' , diz='$diz' , number=$number";
解决方案 »
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