larval 如何捕获mysql错误

public function saveSqlError($exception)

{

    $sql = $exception->getSql();

    $bindings = $exception->getBindings()

    // Process the query's SQL and parameters and create the exact query

    foreach ($bindings as $i => $binding) {

        if ($binding instanceof \DateTime) {

            $bindings[$i] = $binding->format('\'Y-m-d H:i:s\'');

        } else {

            if (is_string($binding)) {

                $bindings[$i] = "'$binding'";

            }

        }

    }

    $query = str_replace(array('%', '?'), array('%%', '%s'), $sql);

    $query = vsprintf($query, $bindings);

    // Here's the part you need

    $errorInfo = $exception->errorInfo;

    $data = [

        'sql'        => $query,

        'message'    => isset($errorInfo[2]) ? $errorInfo[2] : '',

        'sql_state'  => $errorInfo[0],

        'error_code' => $errorInfo[1]

    ];

    // Now store the error into database, if you want..

    // ....

}