PDO Insert throws an unexplained “Array to string conversion” error

Question

I've got the following function

public function addProduct($type, $title, $url
        , $small_image_id, $large_image_id, $number, $number_type
        , $formatted_number, $fk) {

    switch (strtoupper($type)) {
        case 'FOO':
            $ind = 1;
            break;
        case 'BARR':
            $ind = 2;
            break;
        default:
            return null;
    }

    $sql=   "INSERT INTO product(fk_id, type_id, title, url, ".
                                        "sm_image_id, lg_image_id, number, ".
                                        "num_type, num_formatted)".
            "values(?, ?, ?, ?, ?, ?, ?, ?, ?)";

    return $this->insertIdAfterInsert($sql,'iissiiiss',array($fk
            , $ind, $title , $url, $small_image_id
            , $large_image_id, $number, $number_type, $formatted_number));
}

Where insertIdAfterInsert() is:

private function insertIdAfterInsert($sql,$types = null,$params = null) {
    $stmt = $this->conn->prepare($sql);
    if ($stmt === false) {
        trigger_error('Error: ' . $this->conn->errno . ' ' . $this->conn->error, E_USER_ERROR);
    }

    if($types&&$params)
    {
        $typeArr = str_split($types);
        for($i=0; $i< count($params); $i++) {
            if ($typeArr[$i] === 'i') {
                $bind_type = PDO::PARAM_INT;
            } elseif($typeArr[$i]==='s'){
                $bind_type = PDO::PARAM_STR;
            }
            $stmt->bindValue($i+1, $params[$i], $bind_type);
        }
    }

echo (var_dump($stmt->debugDumpParams()));

    try {
        if (!$stmt->execute()) {
            trigger_error('Error: ' . $this->conn->errorCode() . ' ' . $this->conn->errorInfo(), E_USER_ERROR);
        }
    } catch (Exception $e) {
        trigger_error('Error: ' . $this->conn->errorCode() . ' ' . $this->conn->errorInfo(), E_USER_ERROR);
    }
    $stmt = null;
    return $this->conn->lastInsertId();
}

UPDATE: The catch() is where the error prints

I'm passing in

addProduct('Foo', 'Cohort', 'http://www.gooo...', 0, 0, 0, ' ', ' ', 210)

My error shows that insertIdAfterInsert is getting

insertIdAfterInsert('INSERT INTO aff...', 'iissiiiss', Array)

and the debugDumpParams looks like this:

SQL: [183] INSERT INTO affiliate_product(fk_id, type_id, title, url, sm_image_id, lg_image_id, number, num_type, num_formatted)values(?, ?, ?, ?, ?, ?, ?, ?, ?)
Params:  9
Key: Position #0:
paramno=0
name=[0] ""
is_param=1
param_type=1
Key: Position #1:
paramno=1
name=[0] ""
is_param=1
param_type=1
Key: Position #2:
paramno=2
name=[0] ""
is_param=1
param_type=2
Key: Position #3:
paramno=3
name=[0] ""
is_param=1
param_type=2
Key: Position #4:
paramno=4
name=[0] ""
is_param=1
param_type=1
Key: Position #5:
paramno=5
name=[0] ""
is_param=1
param_type=1
Key: Position #6:
paramno=6
name=[0] ""
is_param=1
param_type=1
Key: Position #7:
paramno=7
name=[0] ""
is_param=1
param_type=2
Key: Position #8:
paramno=8
name=[0] ""
is_param=1
param_type=2
NULL

(i'm not sure about that last NULL, but echoed a functioning insert and the same NULL appears so i'm not too worried about it)

Can anyone tell me why this would be throwing the "Array to string conversion"??

Thanks

Answer 1

Thanks to Phil!

The error was ID-10-T and was due to improperly handling the array that PDO::errorInfo() outputs. Still not sure what the error is with my query but I'm off to the Google machine and more echoes to find my answer.

THANKS PHIL!

All though sloppy I altered my trigger_error() to the following:

trigger_error('Error: ' . $this->conn->errorCode() . ' ' . var_dump($this->conn->errorInfo()), E_USER_ERROR);

My error was not with PDO