From HTML form to SQL database using PHP - php

Question

I want to go from a HTML form to a SQL database using PHP.
Here is my current code:
PHP:
if(isset($_POST['submitIpG']))
{
$conn = mysqli_connect($servername, $username, $password, $dbname);
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
$sql = "INSERT INTO GmodServers (ipaddress)
VALUES ($_POST['submitIpG'])";
if (mysqli_query($conn, $sql)) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . mysqli_error($conn);
}
mysqli_close($conn);
echo "<br />\n";
}
As you can see it's hard coded with a specific IP. However, I want it to use an IP from the user input in my form.
HTML:
<form method="post">
<input type="value" name="submitIpG" value=""/>
<input type="submit" name="submitIpG" value="ADD"/>
</form>
How do I do this? I've tried things such as:
$sql = "INSERT INTO GmodServers (ipaddress)
VALUES ('$_POST['submitIpB']')";
Without success.
Thanks!

Answer 1

You should set the action php script in form html also your inputs should be like
<form method="post" action="your_php_file.php">
<input type="text" name="submitIpG" placeholder="the ip input"/>
<input type="submit" name="submit" value="ADD"/>
</form>
and your_php_file.php should be like
$sql = "INSERT INTO GmodServers (ipaddress)
VALUES ('$_POST['submitIpG']')";
But the most important part is DO NOT USE sql queries like that. Please consider using prepared statement.
There is a good and simple example at w3school. this is the link you may want. https://www.w3schools.com/php/php_mysql_prepared_statements.asp