Trouble inserting into a sql table from a form [duplicate] - php

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What to do with mysqli problems? Errors like mysqli_fetch_array(): Argument #1 must be of type mysqli_result and such
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How to construct an SQL query correctly in a PHP script? [duplicate]
Closed 5 years ago.
The expect result is for the data that is submitted through a HTML form, and then the form action is this code below. Proccessing the code below I was expecting it to insert the data from the form into a SQL table called customers. However the data is not being inserted and there is no errors showing on the page.
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
$uName = $_POST['uname'];
$password = sha1($_POST['upassword']);
$fname = $_POST['fname'];
$lname = $_POST['lname'];
$dob = $_POST['dob'];
$address1 = $_POST['address1'];
$address2 = $_POST['address2'];
$postcode = $_POST['postcode'];
echo $uName;
echo $password;
include("dbconn.php");
$sql = "INSERT INTO customers (username, password_hash, customer_foremane, customer_surname, date_of_birth, customer_address1, customer_address2, customer_postcode) VALUES ('$uName', '$password', '$fname', '$lname', '$dob', '$address1', '$address2', '$postcode')";
mysqli_query($conn, $sql);
mysqli_close($conn);
?>
This is the form in which the data is from:
<div id = "reg_form">
<form name="register" action="register_customer.php" method="post">
<p id = "form_text"> Username: </p> <input name="uname" type="text" placeholder="Please enter a user name">
<p id = "form_text"> Password: </p> <input name="upassword" type="password" placeholder="Please enter a password"><br>
<p id = "form_text"> First Name: </p> <input name="fname" type="text" placeholder="Please enter your first name"><br>
<p id = "form_text"> Last Name: </p> <input name="lname" type="text" placeholder="Please enter your last name"><br>
<p id = "form_text"> Date of Birth: </p> <input name="dob" type="text" placeholder="Please enter your date of birth"><br>
<p id = "form_text"> Address 1: </p> <input name="address1" type="text" placeholder="Please enter first line of address"><br>
<p id = "form_text"> Address 2: </p> <input name="address2" type="text" placeholder="Please enter second line of address"><br>
<p id = "form_text"> Postcode: </p> <input name="postcode" type="text" placeholder="Please enter your postcode"><br>
<input name="submit" type="submit">
</form>
</div>
This is the dbconn.php:
<?php
$config = parse_ini_file('config.ini');
$conn = mysqli_connect('localhost',$config['username'],
$config['password'],$config['dbname']);
echo "Connected to the database";
?>

Answer 1

you have to use MySqli Prepared Statements for Inserting the query to make it more secure like below:
// prepare and bind Customers Query
$queryCustomers = $conn->prepare("INSERT INTO customers(username, password_hash, customer_foremane, customer_surname, date_of_birth, customer_address1, customer_address2, customer_postcode) VALUES (?, ?, ?, ?, ?, ?, ?, ?)");
$queryCustomers->bind_param("ssssssss",$uName,$password,$fname,$lname,$dob,$address1,$address2,$postcode);
// execute Customers Query
$queryCustomers->execute();
// Close Connections
$queryCustomers->close();
To learn more, follow http://php.net/manual/en/mysqli.quickstart.prepared-statements.php