UPDATE查询的增量不超过4

Question

I have another problem which I have spent hours on understanding and rewriting. On the UPDATE query I included countr=countr+1. I successfully received the keyWords from the mobile application and was also able to store them in the database. The problem is, whenever the same keyWord is passed for the fifth time a new row is created. Instead of adding 1 to the countr of that keyWord. It's as if the countr is limited on holding number 4 only.

Is it because of a mistake I did with the UPDATE query or is it because of something else I missed?

Here is my code:

$con= mysqli_connect("...","...","...") or die ('Error: ' . mysql_error()); 
mysqli_select_db($con,"...");
$sql= "SELECT keyWord FROM searchedWords";
$result= mysqli_query($con,$sql);
$row=mysqli_fetch_array($result, MYSQLI_ASSOC);

if($row['keyWord']==$_POST[keyWord])
{
  $upD="UPDATE searchedWords SET countr = countr + 1";
     while (!mysqli_query($con,$upD))
    {
     die('Error: ' . mysqli_error($con));
    }
}
else
{
   $insertIn="INSERT INTO `searchedWords`( `keyWord`, `countr`) values ('$_POST[keyWord]',1)";
 while (!mysqli_query($con,$insertIn))
    {
     die('Error: ' . mysqli_error($con));
    }
}

Here is the table where the keyWords and countr are stored:

It just wont go over 4. Android should have a countr of 9 and Java 5. What do you think did I do wrong?

Answer 1

$_POST[keyWord] 

should be

$_POST['keyWord']