Saving information to mysql table - php

Question

So I want to create an html form and save it to a databas in WordPress
First I created the form which I put on this page here
<form action="addperson.php" method="post">
<label>First Name:</label>
<input type="text" name="firstname"/><br>
<label>Last Name:</label>
<input type="text" name="lastname"/><br>
<label>Email:</label>
<input type="text" name="email"/><br>
<input type="submit" name=submit value="Submit"/>
</form>
Then, in public html-->wp-content-my theme I created a file called addperson.php
In this file I put the following code :
<?php
//Block 1
$user = "user"; //Enter the user name
$password = "password"; //Enter the password
$host = "host"; //Enter the host
$dbase = "database"; //Enter the database
$table = "table"; //Enter the table name
//Block 2
$firstname= $_POST['firstname_entered'];
$lastname= $_POST['lastname_entered'];
$email= $_POST['email_entered'];
//Block 3
$connection= mysql_connect ($host, $user, $password);
if (!$connection){
die ('Could not connect:' .
mysql_error());
}
mysql_select_db($database, $connection);
//Block 4
$username_table= mysql_query( "SELECT username FROM $table WHERE username= '$username'" ) or die("SELECT Error: ".mysql_error());
//Block 5
mysql_query("INSERT INTO $table (column1, column2, column3) VALUES (value1, value2, value 3)");
//Block 6
echo 'You have been added.';
//Block 7
mysql_close($connection);
?>
Then I created a database and a table email_list like so:
CREATE TABLE IF NOT EXISTS
email_list (first_name VARCHAR(50),
last_name VARCHAR(50), email VARCHAR
(50));
Next, I entered info into formhere
It saved absolutely nothing.
Where am I going wrong?

Answer 1

Look at your HTML.
<input type="text" name="firstname"/>
<input type="text" name="lastname"/>
<input type="text" name="email"/>
And after submiting form, that data will be under firstname, lastname, email keys in $_POST array.
So you probably should change this
$firstname = $_POST['firstname_entered'];
$lastname = $_POST['lastname_entered'];
$email = $_POST['email_entered'];
to this
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$email = $_POST['email'];
You should also consider enabling errors displaying in php to get more info about your potentials mistakes.
// Put this on top of your php file
ini_set('display_errors', '1');