Cannot insert data into database (php/mysqli) (Phpstorm 9/Wamp) [duplicate] - php

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I have an issue with inserting the data that I gather from one of my forms into my database.
Each form adds data to a different table in the database(one into users and one into tasks).
I use one form for registration and I'll paste the important parts of the code below(this one is working).
This is the form part of the Register.php file
<form method="post" action="register_code.php">
<div class="FormElement">
<input name="user_name" type="text" class="Tfield" id="user_name" required placeholder="User Name">
</div>
<div class="FormElement">
<input name="password" type="password" class="Tfield" id="password" required placeholder="Password">
</div>
<div class="FormElement">
<input name="email" type="email" class="Tfield" id="email" required placeholder="E-mail">
</div>
<div class="FormElement">
<input name="first_name" type="text" class="Tfield" id="first_name" required placeholder="First Name">
</div>
<div class="FormElement">
<input name="last_name" type="text" class="Tfield" id="last_name" required placeholder="Last Name">
</div>
<div class="FormElement">
<input type="submit" id="Register" name="Register" value="Register" class="button">
</div>
This is the register_code.php file
<?php
require "DBconnect.php";
$post = $_POST;
if(isset($post)) {
session_start();
$UName = $post['user_name'];
$PW = md5($post['password']);
$FName = $post['first_name'];
$LName = $post['last_name'];
$Email = $post['email'];
$sql = $con->query("INSERT INTO users (user_name, password, email, first_name, last_name) VALUES ('$UName','$PW','$Email', '$FName', '$LName')");
if($sql)
header("Location: Registration_successful.php");
else
echo "Please try again to register";
}
include 'Register.php';
And another form I use to add data into another table(named tasks). The data I gather from this file will not insert into my database for some reason.
This is the form part of the Add_Task.php file:
<form method="post" action="Add_Task_code.php">
<div class="FormElement">
<input name="TName" type="text" class="Tfield" id="TName" required placeholder="Task name">
</div>
<div class="FormElement">
<input name="TDesc" type="text" class="TextField" id="TDesc" required placeholder="Task summary">
</div>
<div class="FormElement">
<input type="submit" id="Submit" name="Submit" value="Submit" class="button">
</div>
</form>
And this is the code from the Add_Task_code.php file
<?php
require 'DBconnect.php';
$post=$_POST;
if(isset($post))
{
$TaskName = $post['TName'];
$TaskDesc = $post['TDesc'];
$sqltask="INSERT INTO tasks ('TName','TDesc') VALUES ('$TaskName','$TaskDesc')";
if ($con->query($sqltask))
header("Location: Tasks.php");
else
header("Location: Add_Task.php");
}
?>
The file DBconnect.php only contains this:
<?php
$con= mysqli_connect("localhost", "root","","first_app")
?>
The problem is that even though the code is similar in both forms only one of them is working. Every time I run the Add_Task.php file it redirects me to the same page (as I instructed it) since it does not add anything to the database.
I also checked the tables just in case it adds something but it does not.

Answer 1

please set your primary_key(id) as auto increment in table tasks. if you not set it might be possible.
and change this line
$sqltask="INSERT INTO tasks ('TName','TDesc') VALUES ('$TaskName','$TaskDesc')";
like this :
$sqltask="INSERT INTO tasks (TName,TDesc) VALUES ($TaskName,$TaskDesc)";

Answer 2

You are mixing OOP style and Procedural Style in your code
You are used Procedural Style in your DBconnect.php file. And You are missing ; in your connection file.
DBconnect.php file should be:
<?php
$con= mysqli_connect("localhost", "root","","first_app");
?>
register_code.php code should be:
<?php
require "DBconnect.php";
$post = $_POST;
if(isset($post)) {
session_start();
$UName = $post['user_name'];
$PW = md5($post['password']);
$FName = $post['first_name'];
$LName = $post['last_name'];
$Email = $post['email'];
$sql = mysqli_query($con,"INSERT INTO users (user_name, password, email, first_name, last_name) VALUES ('$UName','$PW','$Email', '$FName', '$LName')");
if($sql)
header("Location: Registration_successful.php");
else
echo "Please try again to register";
}
include 'Register.php';
Add_Task_code.php file code should be:
<?php
require 'DBconnect.php';
$post=$_POST;
if(isset($post))
{
$TaskName = $post['TName'];
$TaskDesc = $post['TDesc'];
$sqltask="INSERT INTO tasks ('TName','TDesc') VALUES ('$TaskName','$TaskDesc')";
if (mysqli_query($con,$sqltask))
header("Location: Tasks.php");
else
header("Location: Add_Task.php");
}
?>

Answer 3

Try to make the below changes and see what the actual error is.then debug your code.
if($_SERVER['REQUEST_METHOD']=='POST')
{
$TaskName = $post['TName'];
$TaskDesc = $post['TDesc'];
$sqltask="INSERT INTO tasks ('TName','TDesc') VALUES ('$TaskName','$TaskDesc')";
if ($con->query($sqltask))
echo "Successfully Inserted";
else
echo "Error: " . $sqltask. "<br>" . mysqli_error($conn);
}
?>