Re-index numeric array keys

Use array_merge() to renumber the array:

$your_old_array = array( 2 => 'whatever', 19 => 'huh', 22 => 'yep' );
$your_new_array = array_merge($your_old_array);
print_r($your_new_array);

Prints this:

Array ( 
  [0] => whatever 
  [1] => huh 
  [2] => yep )

$your_new_array = array_values($your_old_array);