Insert multiple rows with PDO prepared statements

Question

I would like to know if it is possible to insert multiple rows using one prepared statement. Below is an example of how I would normally insert one row into the db:

Answer 1

To keep your code, you have to make a loop for executing all insertions you need :

$array_params = array();
$params[':val1']="val1 1";
$params[':val2']="val1 2";
$params[':val3']="val1 3";
$array_params[] = $params;

$params[':val1']="val2 1";
$params[':val2']="val2 2";
$params[':val3']="val2 3";
$array_params[] = $params;

$sql="INSERT INTO table (col1,col2,col3) VALUES (:val1,:val2,:val3)";
$stmt=DB::getInstance()->prepare($sql);
foreach($array_params as $params)
{
  $stmt->execute($params);
}

But its possible to execute multiple insertions with one query like INSERT INTO table (col1,col2,col3) VALUES ("val1","val2","val3"),("val4","val5","val6"),("val7","val8,"val9"), by using something like this to build the query:

$all_inserts = array( array('val1', 'val2', 'val3'),array('val4', 'val5', 'val6'));
$sql = 'INSERT INTO table (col1,col2,col3) VALUES ';
$rows = array();
foreach ($all_inserts as $one_insert)
{
   $rows[] = '('.implode(',', $pdo->quote($one_insert).')';
}
$sql .= ' '.implode(',', $rows);
$pdo->query($sql);