Insert to MySQL PDO Function

<?php
//START: SQLInsert
//$fields = array of fields in DB
//$values = array of values respective to the $fields
if (!function_exists("SQLInsert")) : function
SQLInsert($table,$fields,$values) {
 
  //Connect to DB
  include('connect.php');
 
  //build the fields
  $buildFields = '';
  if (is_array($fields)) {
 
    //loop through all the fields
    foreach($fields as $key => $field) :
      if ($key == 0) {
        //first item
        $buildFields .= $field;
      } else {
        //every other item follows with a ","
        $buildFields .= ', '.$field;
      }
    endforeach;
 
  } else {
    //we are only inserting one field
    $buildFields .= $fields;
  }
 
  //build the values
  $buildValues = '';
  if (is_array($values)) {
 
    //loop through all the values
    foreach($values as $key => $value) :
      if ($key == 0) {
        //first item
        $buildValues .= '?';
      } else {
        //every other item follows with a ","
        $buildValues .= ', ?';
      }
    endforeach;
 
  } else {
    //we are only inserting one field
    $buildValues .= ':value';
  }
 
  $prepareInsert = $db->prepare('INSERT INTO '.$table.' ('.$buildFields.') VALUES ('.$buildValues.')');
 
  //execute the update for one or many values
  if (is_array($values)) {
    $prepareInsert->execute($values);
  } else {
    $prepareInsert->execute(array(':value' => $values));
  }
 
  //record and print any DB error that may be given
  $error = $prepareInsert->errorInfo();
  if ($error[1]) print_r($error);
 
} endif;
//END: SQLInsert
?>

<?php
//inserting one item
SQLInsert('db_items', 'db_field', 'value');
 
//inserting multiple items
$fields[] = 'name';
$fields[] = 'description';
$fields[] = 'value';
$fields[] = 'stock';
 
$values[] = $_POST['name'];
$values[] = $_POST['description'];
$values[] = $_POST['value'];
$values[] = $_POST['stock'];
 
SQLInsert('db_items', $fields, $values);
?>