Синтаксис:
UPDATE table_name
SET column1=value, column2=value2,...
WHERE some_column=some_value
Для обновления в PHP (update.php):
$sql = "";
$action = mysqli_real_escape_string($con, $_GET['action']);
$id = mysqli_real_escape_string($con, $_GET['id']);
if($action == "add") {
$sql = "UPDATE admins SET legal='1' WHERE id='".$id."'";
} else {
$sql = "UPDATE admins SET legal='0' WHERE id='".$id."'";
}
if (mysqli_query($con, $sql)) {
echo "Record updated successfully";
} else {
echo "Error updating record: " . mysqli_error($con);
}
и вы должны изменить свой якорный тег
<td><a href='update.php?action=remove&id=<?= $row['id'] ?>'>remove</a></td>
<td><a href='update.php?action=add&id=<?= $row2['id'] ?>'>add</a></td>