通过mysqli_error()函数显示刚刚发生的错误

$mysqli=new mysqli('127.0.0.1','root','root','test');
$res=$mysqli->query('select * from test144 limit 30000');
$res=mysqli_fetch_all($res,MYSQLI_ASSOC);
echo mysqli_error($mysqli);  
//输出Table 'test.test144' doesn't exist

$mysqli=new mysqli('127.0.0.1','root','root','test'); $res=$mysqli->query('select * from test144 limit 30000'); $res=mysqli_fetch_all($res,MYSQLI_ASSOC); echo mysqli_error($mysqli); //输出Table 'test.test144' doesn't exist