Updating data in mysql table - php

Question

I am trying to see if keyWord already exists in table searchedWords. If it does, then the countr increases by one. If it does not exists in the table, then I used INSERT. The problem is, the keyWord being passed to the site is not stored in the DB. The other BIG problem is that the countr does not add at. Is it because of the if statement? Or is it the while loop?
<?php
date_default_timezone_set('Asia/Manila');
$today = date('m-d-Y');
echo $today;
$urltopost = "http://opac.usls.edu.ph/TLCScripts/interpac.dll?Search";
$datatopost = "FormId=0&Config=pac&LimitsId=0&StartIndex=0&SearchField=7&SearchType=1&ItemsPerPage=20&SearchData=$_POST[keyWord]";
$ch = curl_init ($urltopost);
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, $datatopost);
curl_setopt ($ch, CURLOPT_HEADER, 0);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
$returndata = curl_exec ($ch);
echo $returndata;
$con=mysqli_connect("...","...","...","...")or die ('Error: ' . mysql_error());
$sql= "SELECT * FROM searchedWords";
$result= mysqli_query($con,$sql);
while($row=mysqli_fetch_array($result, MYSQLI_ASSOC))
{
if($row['keyWord']==$_POST[keyWord])
{
$upD="UPDATE searchedWords SET countr = countr + 1 WHERE keyWord = '".$row['keyWord']."'";
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));
}
}
}
?>
Thank you to those who can help me out.

Answer 1

Why are you making things complex... Try the simple way
$KeyWord = $_POST['keyWord']; //Do not forget to sanitize this for security
$sql= "SELECT * FROM searchedWords WHERE keyWord='$KeyWord'";
$result= mysqli_query($con,$sql);
$count= mysqli_num_rows($result);
if($count) {
$upD="UPDATE searchedWords SET countr = countr + 1 WHERE keyWord = '$keyWord'";
mysqli_query($con,$upD);
} else {
$insertIn="INSERT INTO `searchedWords`( `keyWord`, `countr`) values ('$keyWord',1)";
mysqli_query($con,$insertIn); }

Answer 2

It is really bad practice to run sql queries in the loop. Try to use such query to update all existing keywords:
$keyword = htmlspecialchars($_POST['keyWord']);
UPDATE searchedWords SET countr = countr + 1 WHERE keyWord = '".$keyword."'";
No more loops!
And to work more safely and efficient with database take a look on http://php.net/manual/en/pdo.prepared-statements.php