Function php 7

Dear Master PHP,

Mau bertanya dong pada PHP 5 function di bawah ini dapat berjalan dengan baik. Namun pada saat saya update PHP 7 selalu gagal di eror : "Can\'t insert into hits : "

function addinfo($page5)
{
	if(mysqli_num_rows(mysqli_query($link,"SELECT page FROM hits WHERE page = '$page5'")))
	{
	//A counter for this page  already exsists. Now we have to update it.

		$updatecounter = mysqli_query($link,"UPDATE hits SET count = count+1 WHERE page = '$page5'");
		if (!$updatecounter)
		{
		die ("Can't update the counter : " . mysqli_error($link)); // remove ?
		}
	}
	else
	{
	// This page did not exsist in the counter database. A new counter must be created for this page.

		$insert = mysqli_query($link,"INSERT INTO hits (page, count)VALUES ('$page5', '1')");

		if (!$insert)
		{
    		die ("Can\'t insert into hits : " . mysqli_error($link)); // remove ?
		}
	}
}

Mohon bantuan nya ya master.

Terima kasih