implode multidimensional php array

I am working on e-commerce site in php. I've multidimensional php array like this :-

Array
(
    [0] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
            [3] => 4
        )
[1] => Array
    (
        [0] => 5
        [1] => 6
        [2] => 7
    )

)

I am working on Advance search option. I've two table first one is product and another one is productattributes. I want to implode zero index array value by OR operator, One Index array value by OR Condition and then final array with zero index AND first index like this :-

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)

I've tried this code :-

$eqpcond = "";
    if(!empty($_REQUEST["equipmentarr"])){
        foreach($_REQUEST["equipmentarr"] as $y => $equipval){
            $eqpcond = "select * from tbl_product where id IN (select product_id from tbl_vehicleproductequipments where ";
            foreach($equipval as $s => $vl){
                $equipcarr[] = " OR equipmentvalue_id = $vl";
            }
        }

        if(!empty($equipcarr)){
            $eqpcond = implode(" AND ",$equipcarr).")";
        }
    }

and i got the query like this which is not correct.

select * from tbl_product where id IN(select product_id from tbl_vehicleproductequipments where equipmentvalue_id = 1 AND OR equipmentvalue_id = 2 AND OR equipmentvalue_id = 3 AND OR equipmentvalue_id = 4 AND OR equipmentvalue_id = 5 AND OR equipmentvalue_id = 6 AND OR equipmentvalue_id = 7)

Please help me as I got stuck in this situation and I don't know how to do this. Any Help will be appreciated.

Thanks in Advance