SQLSTATE[HY093]: Invalid parameter number: no parameters were bound, but parameters are provided

Question

I\'m building a database object that joins the PDO object with the PDOStatement object in order for chaining to be available. Basically I just put the

Answer 1

Got the same error, but different cause

My request had comments, one of which included a damn question mark.
For PDO, a "?" is, of course, a parameter to bind.

My request had no issue anywhere else, and I had no idea where PDO would invent a "parameter" while I wasn't using any, since I always use named placeholders, like :value

Spent more than one hour on this :(
May this answer help some people having this foolishly trivial issue.

Answer 2

I guess using a reference &$val instead of a value $val is what causes the issue.

Please try this code instead:

public function bindParam($place, $val, $dataType)
{
    if(!$this->stmt) throw new \Exception('PDO Statement is empty');
    $this->stmt->bindParam($place, $val, $dataType);
    return $this;
}

EDIT

My above answer is wrong.

Try modifying the execute method:

public function execute(array $params = array()){
    if(!$this->stmt) throw new \Exception('PDO Statement is empty');
    $this->stmt->execute();
    return $this;
}

Passing an empty array as parametre to the execute method removes all previous bindings. This is why bindParam returned true (successfully bound), yet the "no params were bound" error appeared as soon as you called execute.