<?php

$brr= array(40,50);

$arr = array(
		array(30,30),
		array(30,40),
	);

function unqid_zx($arrs,$brr){
	foreach ($arrs as $key1 => $value1) {
		# code...
		if($brr[0]==$value1[0] && $brr[1]==$value1[1]){
			array_push($arrs, $brr);
		}
	}

	var_dump($arrs);
}

unqid_zx($arr,$brr);

?>