MYSQL create a line with every new user - php

Question

I have a little problem
I want to create a script, that creates a new line in the table, if there is a new user and in the line, change the "points" columme to zero(0)
This is my current code:
<?php
header('Content-Type: text/html; charset=Windows-1250');
$firstName = $_POST['firstname'];
$servername = "db.mysql-01.gsp-europe.net";
$username = "xxxxxxxxxx";
$password = "xxxxxxxxxxx";
$dbname = "xxxxxxxxxxx";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
// sql to create table
$sql = "UPDATE `member_profile` SET points = points + 1 WHERE user_id = '$firstName'";
if ($conn->query($sql) === TRUE) {
echo "Thingz created successfully";
} else {
echo "Error doing sum thingz: " . $conn->error;
}
$conn->close();
?>
What i need in the cube: When there new user_id ($firstName) appear, create new line with this user name, and change the "points" columme from "null" into Zero(0)
Thanks for yout time, I appreciate it

Answer 1

If I understand well you want to check if the user exists or not. If user is new create new line with the user with 0 points and if exist increse points with 1.
<?php
header('Content-Type: text/html; charset=Windows-1250');
if(isset($_POST['firstname'])){
$firstName = $_POST['firstname'];
$servername = "db.mysql-01.gsp-europe.net";
$username = "xxxxxxxxxx";
$password = "xxxxxxxxxxx";
$dbname = "xxxxxxxxxxx";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
// check if the user exist
$check = "SELECT * FROM `member_profile` WHERE user_id = '$firstName'";
$result = mysqli_query($conn,$check) or die(mysqli_error($conn));
$rows = mysqli_num_rows($result);
//if exist increse points with 1
if($rows>=1){
$sql = "UPDATE `member_profile` SET points = points + 1 WHERE user_id = '$firstName'";
if ($conn->query($sql) === TRUE) {
echo "Thingz created successfully";
} else {
echo "Error doing sum thingz: " . $conn->error;
}
}
//if don't exist create user with points 0
if($rows==0)
{
$query = "INSERT into `member_profile` (user_id, points) VALUES ( '$firstName' ,'0')";
$result = mysqli_query($conn,$query)or die(mysqli_error($conn));
$conn->close();
}
}
?>
Remember, I gave you an idea, the code is prone to sql inject