$op = Db::pdo()->prepare($sql);
$result = $op->execute($execute);      
var_dump($result);
if ($result) {
    return $op->$resultMode();
} error message: 
 Fatal error: Uncaught Error: Call to a member function execute () on boolean in xxxxxxxxxx 
 Error: Call to a member function execute () on boolean in xxxxxxxxx 
 then I use $op- > errorCode () to get 00000, indicating that the also successful 
 errorinfo can"t get the mysql error message. What"s going on? 
 add: 
 the sql statement goes like this: normally, name = "qq", but I changed" qq" to * 
. The problem is that errorinfo can"t get the error message of mysql either 
