如何使用PDO :: lastInsertId（）？

Question

$sql='INSERT INTO complaints(complaint_id) values(default)';
$db->query($sql,array());

//get newly added complaint_id

$complaint_id=$db->lastInsertId();

I used above code to get last insert ID from complaints table. But it gives an error like Fatal error: Call to undefined method EMMACore\\Utils\\DBConnection::lastInsertId() in /h... Can anybody tell me what is wrong in my application.Thanks.

Answer 1

In most case, the PDO instance is a property of EMMACore\\Utils\\DBConnection , so check the source code and find it out.

Something like: $db->getDbh()->lastInsertId(); where getDbh (or something like that) returns the PDO instance.

Edit: After seeing your result of var_dump() , that is for sure.

Answer 2

class db extends PDO

例如，您可以参考此链接PHP PDO Wrapper Class 。