- implode: documentation ( source)
<?php
//select * from tbl_product where id IN(select product_id from tbl_vehicleproductequipments where (equipmentvalue_id = 1 OR equipmentvalue_id = 2 OR equipmentvalue_id = 3 OR equipmentvalue_id = 4) AND (equipmentvalue_id = 5 OR equipmentvalue_id = 6 OR equipmentvalue_id = 7)
$arr = array(
array(1, 2, 3, 4),
array(5, 6, 7)
);
echo $sql = 'select product_id from tbl_vehicleproductequipments where (equipmentvalue_id = '.implode(" OR equipmentvalue_id = ", $arr[0]).') AND (equipmentvalue_id = '.implode(" OR equipmentvalue_id = ", $arr[1]).")";