MySQL Update in mysqli

Somebody didn’t like the MySQLi Update Query example on the tutorialspoint.com website because it use the procedure mysqli_query style. Here’s a simple example of using the object-oriented method version. More or less, instead of query it uses the more intuitive execute() method.

The update_member function contains the logic and below it is a call to the test the function. It relies on a MySQLCredentials.inc file that contains the hostname, user name, password, and database name. You can create create member table, like my example in MySQL 8, or any other table in your MySQL database.

connect_errno) {
    print $mysqli->connect_error."
";
    print "Connection not established ...
";
  }
  else {
    // Initial statement.
    $stmt = $mysqli->stmt_init();
 
    /* Disabling auto commit when you want two or more statements executed as a set.
    || ------------------------------------------------------------
    ||  You would add the following command to disable the default
    ||  of auto commit.
    ||  ------------------------------
    ||   $mysqli->autocommit(FALSE);
    || ------------------------------------------------------------
    */

    // Declare a static query.
    $sql = "UPDATE   member\n"
         . "SET      member_type = ?\n"
         . ",        credit_card_number = ?\n"
         . ",        credit_card_type = ?\n"
         . "WHERE    account_number = ?\n";

    /* Prepare statement.
    || ------------------------------------------------------------
    ||  Please note that the bind_param method is a position 
    ||  rather than named notation, which means you must provide
    ||  the variables in the same order as they are found in
    ||  the defined $sql variable as "?".
    || ------------------------------------------------------------
    ||  print($sql);
    ||  print("Member Type:      [1][".$member_type."]\n");
    ||  print("Credit Card No:   [2][".$credit_card_number."]\n");
    ||  print("Credit Card Type: [3][".$credit_card_type."]\n");
    ||  print("Account Number:   [4][".$account_number."]\n");
    || ------------------------------------------------------------
    */
    if ($stmt->prepare($sql)) {
      $stmt->bind_param("ssss",$member_type,$credit_card_number,$credit_card_type,$account_number); } 
 
    // Attempt query and exit with failure before processing.
    if (!$stmt->execute()) {
 
      // Print failure to resolve query message.
      print $mysqli->error."
";
      print "Failed to resolve query ...
";
    }
    else {   
      /*  Manually commiting writes when you have disabled the
      ||  default auto commit setting, explained above.
      || ------------------------------------------------------------
      ||  You would add the following command to commit the 
      ||  transaction.
      ||  ------------------------------
      ||   $mysqli->commit();
      || ------------------------------------------------------------
      */
    }
  }
}

// Test case
update_member('US00011', '1006', '6011-0000-0000-0078', '1007');
?>

I put this logic in a function.php file. If you do the same, you can run the test case like this from the command line:

php function.sql

As always, I hope this helps.