im making a form on php which saves data into the database here is the code for it where i send data from php form to the database:

<?php
$users_name = $_POST['name'];
$users_email = $_POST['email'];
$users_phoneNumber = $_POST['phNo'];
$users_cnic = $_POST['cnic'];
$users_voucherNumber = $_POST['vNum'];
$users_modelNumber = $_POST['prod'];

if( $_POST )
        {

          $dbhost = "localhost";
          $dbuser = "root";
          $dbpassword = "";
          $dbname = "dany";
          $query = "";
          $sqlQuery = ""; 

          $conn = new mysqli($dbhost, $dbuser, $dbpassword, $dbname);

          if ($conn->connect_error) {
              die("Connection failed: " . $conn->connect_error);
          } 

          echo ("Variables values: " . " "  . $users_cnic . " " .
                          $users_phoneNumber . "<br>");
          $query = "INSERT INTO customer( c_name, c_phoneNumber, c_cnic,
                    c_email, c_voucherNumber, c_modelNumber) VALUES
                     ('$users_name','$users_phoneNumber', '$users_cnic',
                    '$users_email', $users_voucherNumber,
                       '$users_modelNumber')";

          if ($conn->query($query) === TRUE) {
              //if successful
            echo ("Variables values after success: " . " "  . $users_cnic .
                   " " . $users_phoneNumber . "<br>");
          } else {
              //if data not successfully entered
              echo "Error: " . $query . "<br>" . $conn->error;
          }

          $conn->close();

        }

?>

but the problem is when i try to send data, same value for "c_phoneNumber" and "c_cnic" is sent every single time which is "2147483647". i.e every row in the table has two columns and each of this column has value "2147483647".

if you see the line which i have witten to check the values if they are correct:

echo ("Variables values: " . " "  . $users_cnic . " " . $users_phoneNumber .
      "<br>");

here they have the values exactly the same as sent from the textboxes of the form. but when the query is made in the very next line of code:

$query = "INSERT INTO customer( c_name, c_phoneNumber, c_cnic,
                    c_email, c_voucherNumber, c_modelNumber) VALUES
                     ('$users_name','$users_phoneNumber', '$users_cnic',
                    '$users_email', $users_voucherNumber,
                       '$users_modelNumber')";

both these variables hold "2147483647".

and when the if statment runs after successfully entering the data into table:

if ($conn->query($query) === TRUE) {
              //if successful
            echo ("Variables values after success: " . " "  . $users_cnic .
                   " " . $users_phoneNumber . "<br>");
          }

it has the same values which have been passed from the text boxes. i cannot figure out the problem the variable data remains the same throughout the programs running state but when inserted into the database changes.

i have tried:

1- creating a new table

2- creating two new columns

3- sending hard coded values.

 $query = "INSERT INTO customer( c_name, c_phoneNumber, c_cnic,
                    c_email, c_voucherNumber, c_modelNumber) VALUES
                     ('$users_name',123, 456,
                    '$users_email', $users_voucherNumber,
                       '$users_modelNumber')";

and when i do this step no 4, the values are perfectly send and inserted which are 123, 456.

4- creating a new query, saving it in an other variable, running the query = same results.(error)

2147483647 is the max (signed) value for an INT field in MySQL. Any number larger than that will be reset to that max value. See https://dev.mysql.com/doc/refman/5.7/en/integer-types.html. You can use the BIGINT type if you need to store bigger numbers.

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