How to implement a referral system with a link?

G
Gucciprado13372021-07-09 20:37:15
WordPress
Gucciprado1337, 2021-07-09 20:37:15
Hello, tell me there is a registration fragment in php under wordpress, how to arrange a referral system, tell me the options, create a session or in cookies?
Here is the registration code
<?php
/*
Template Name: Registration form

*/
get_header(); 
// Exit if accessed directly
if ( !defined('ABSPATH')) exit;
?>
<body id="login-page" <?php body_class(); ?>>

<div class="container">

<div class="row register-page-container p-3 p-lg-5 mt-5 d-flex justify-content-center w-75 mx-auto">

<?php
global $wpdb, $user_ID; 

//Check whether the user is already logged in 
if (!$user_ID) {

// Default page shows register form. 
// To show Login form set query variable action=login
$action = (isset($_GET['action']) ) ? $_GET['action'] : 0;

// Login Page
if ($action === "login") { ?>

<?php 
$login = (isset($_GET['login']) ) ? $_GET['login'] : 0;

if ( $login === "failed" ) {
echo '<div class="col-12 register-error"><strong>ERROR:</strong> Invalid username and/or password.</div>';
} elseif ( $login === "empty" ) {
echo '<div class="col-12 register-error"><strong>ERROR:</strong> Username and/or Password is empty.</div>';
} elseif ( $login === "false" ) {
echo '<div class="col-12 register-error"><strong>ERROR:</strong> You are logged out.</div>';
}
?>

<div class="col-md-5">

<?php 
$args = array(
'redirect' => home_url().'/login/', 
);

wp_login_form($args); ?>

<p class="text-center"><a class="mr-2" href="<?php echo wp_registration_url(); ?>">Register Now</a>
<span clas="mx-2">·</span><a class="ml-2" href="<?php echo wp_lostpassword_url( ); ?>" title="Lost Password">Lost Password?</a></p>

</div>

<?php

} else { // Register Page ?>

<?php
if ( $_POST ) {

$error = 0;

$username = esc_sql($_REQUEST['username']); 
if ( empty($username) ) {

echo '<div class="col-12 register-error">User name should not be empty.</div>'; 
$error = 1;
}

$email = esc_sql($_REQUEST['email']);
if ( !preg_match("/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/", $email) ) { 

echo '<div class="col-12 register-error">Please enter a valid email.</div>';
$error = 1;
}

if ( $error == 0 ) {

$random_password = wp_generate_password( 12, false ); 
$status = wp_create_user( $username, $random_password, $email ); 

if ( is_wp_error($status) ) {

echo '<div class="col-12 register-error">Username already exists. Please try another one.</div>'; 
} else {

$from = get_option('admin_email'); 
$headers = 'From: '.$from . "\r\n"; 
$subject = "Registration successful"; 
$message = "Registration successful.\nYour login details\nUsername: $username\nPassword: $random_password"; 

// Email password and other details to the user
wp_mail( $email, $subject, $message, $headers ); 

echo "Please check your email for login details."; 

$error = 2; // We will check for this variable before showing the sign up form. 
}
}

}

if ( $error != 2 ) { ?> 

<?php if(get_option('users_can_register')) { ?>

<div class="col-md-5 manual-register-form">

<form action="" method="post"> 
<p> 
<label for="user_login">Username</label>
<input type="text" name="username" placeholder="Type your Username Here" class="register-input mb-4" value="<?php if( ! empty($username) ) echo $username; ?>" /><br />
</p>
<p> 
<label for="user_email">Email</label>
<input type="text" name="email" placeholder="Type your Email Here" class="register-input mb-4" value="<?php if( ! empty($email) ) echo $email; ?>" /> <br /> 
</p>
<input type="submit" id="register-submit-btn" class="mb-4" name="submit" value="SignUp" /> 
</form>

<p>Already have an account? <a href="/login">Login Here</a></p>

</div>

<?php } else {

echo "Registration is currently disabled. Please try again later."; 

}

} ?>

<?php }

} else { ?>

<p>You are logged in. Click <a href="<?php bloginfo('wpurl'); ?>">here to go home</a></p>

<?php } ?>

</div>
</div>
<?php get_footer(); 
?>
</body>
</html>