【www.gdgbn.com--word】
代码如下$host = "localhost";
$user_name = "root";
$password = "admin";
$id = $_get["id"];
$conn = mysql教程_connect($host,$user_name,$password);
if(!$conn)
{
die("数据库连接失败:".mysql_error());
}
mysql_select_db("test");
$sql = "select id,name,city from users where id=".$id;
$result = mysql_query($sql) or die("
error: ".mysql_error()."
产生问题的sql:".$sql);
if($num = mysql_num_rows($result))
{
echo "
";
while($row = mysql_fetch_array($result,mysql_assoc))
{
print_r($row);
}
}
else
{
echo "你要查询的数据己经学存在了";
}mysql_close($conn);
?>
查询id=2的记录