PDO binds n times same value with foreach

Question

I have function in PHP, which should bind in MySQL IN statement so many variables, that is in array. My problem is that variable and key is changing but function bind only last

Answer 1

If you pass the variable as reference it would work fine for value, but won't work for key.

Example:

foreach ($data_array as $key => &$param) {
    $key_number = $key + 1; //this won't work
    $key_name   = 'key' . $key_number;
    $stmt->bindParam($key_name, $param, PDO::PARAM_INT);
    var_dump($key_name);    // var dump 2
    var_dump($param);       // var dump 3
}