$db = new dbstuff; $db->connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect); $dbuser = $dbpw = $dbname = $pconnect = NULL; function pre($str){ global $db; $sql="select title from mmm where order by id desc limit 0,1"; $query=$db->query($sql); $rs=$db->fetch_array($query); echo $rs['title']; } 不行的话,检查你的数据库连接是否成功.
$sql="select title from mmm where order by id desc limit 0,1";
是这样,没留意, 要养成 echo $sql;的习惯啊
数据库的资料要定义为全局变量, function pre($str){ global $db; $sql="select title from mmm where order by id desc limit 0,1"; $query=$db->query($sql); $rs=$db->fetch_array($query); echo $rs['title']; }
$db->connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect);
$dbuser = $dbpw = $dbname = $pconnect = NULL;
function pre($str){
global $db;
$sql="select title from mmm where order by id desc limit 0,1";
$query=$db->query($sql);
$rs=$db->fetch_array($query);
echo $rs['title'];
}
不行的话,检查你的数据库连接是否成功.
要养成 echo $sql;的习惯啊
function pre($str){
global $db;
$sql="select title from mmm where order by id desc limit 0,1";
$query=$db->query($sql);
$rs=$db->fetch_array($query);
echo $rs['title'];
}