MySQLI binding params using call_user_func_array

Question

Please see below my code. I am attempting to bind an array of paramenters to my prepared statement. I\'ve been looking around on the web and can see I have to use call_user_

Answer 1

Wasn't able to answer this on my own question because it got marked as dupe: here. But I think my final solution, which uses the answers in this question, works in my use case, might be helpful for someone.

My goals was to take a posted set of ID's and use them in a NOT IN MYSQL statement. Assuming array of 5 ID's posted.

1. Count the number posted ID's to build the ? placeholders for NOT IN statement. Using $params_count = substr(str_repeat(',?', count($array_of_ids)), 1); gives the result: (?,?,?,?,?) to be used in SQL statement.

2. Make function that takes ID's and type i or s etc. For me, they were all i so my function is simpler. return array that looks like this $params= array("iiiii",1,2,3,4,5) where the first value is the set of i's and the subsequent values are the ID's depending on total ID's passed into function.

   function build_bind_params($values, $bind_type) {
       $s = substr(str_repeat($bind_type, count($values)), 0);
       $bind_array = array();
       $bind_array[] = $s;
       foreach($values as $value) {
           $bind_array[] = $value;
       }
       return $bind_array; 
   }
   

$params = build_bind_params($array_of_ids, "i");

3. Then use foreach ($params as $key => $value) $tmp[$key] = &$params[$key]; to get the newly created $params formatted properly for binding.

4. Then use call_user_func_array(array($stmt , 'bind_param') , $tmp); to properly bind the array.

5. Then execute the $stmt