larval how to catch mysql errors

larval method to capture mysql errors: 1. Use the errorInfo variable to return SQLSTATE errors and messages; 2. Use the exception handler "app/Exceptions/Handler.php and listen for QueryExceptions" to log all SQL errors to the data .

Recommended: "mysql video tutorial"

Laravel uses PDO, so you can use the errorInfo variable to return SQLSTATE errors and news. Basically, you need to use $e->errorInfo;

If you want to log all SQL errors to the database, you can use an exception handler (app/Exceptions/Handler.php and listen for QueryExceptions. Like this of:

public function render($request, Exception $e)
{
    switch ($e) {
        case ($e instanceof \Illuminate\Database\QueryException):
            LogTracker::saveSqlError($e);
            break;
        default:
            LogTracker::saveError($e, $e->getCode());
    }
    return parent::render($request, $e);
}

Then you can use something like this:

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..
    // ....
}

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