SQL: lav et Database udtræk, ud fra en array

$galleries = array(1,2,5)
$ids = join(',',$galleries);  
$sql = "SELECT * FROM galleries WHERE id IN ($ids)";

 
SELECT * FROM employee_tbl WHERE daily_typing_pages IN ( 250, 220, 170 );

$bruger_id = array("131", "132", "133", "134");
$ids = join(',',$bruger_id);  
$sqli = "SELECT * FROM kunder WHERE bruger_id IN ($ids)";