PHP delete row in mysql dont know sipmple code

I have this mysql table, I also have a delete button ready, but I dont know what i should write in the <a href=" "> My code for the table is here

while($row = mysqli_fetch_array($result))
{
echo "<tr align='center'>";
echo "<td>" . $row['nazev'] . "</td>";
echo "<td>" . $row['ico'] . "</td>";
echo "<td>" . $row['statistika'] . "</td>";
echo "<td>" . $row['konzultant'] . "</td>";
echo "<td><a href='php delete row??'><img src='delete.jpg' alt='delete' /></a></td>";