Initial commit

my-plugin.php

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+<?php
+
+/**
+ * Plugin Name: My Plugin
+ * Plugin URI: --
+ * Description: My First Plugin for WP
+ * Version: 1.1
+ * Author: Manoj
+ * Author URI: --
+ * License: GPL2
+ */
+
+ function slf_enqueue_styles() {
+    wp_enqueue_style('slf-custom-styles', plugin_dir_url(__FILE__) . 'style.css');
+}
+add_action('wp_enqueue_scripts', 'slf_enqueue_styles');
+
+function slf_login_form() {
+    if (is_user_logged_in()) {
+        return '<p>You are already logged in.</p>';
+    }
+
+    // Display error message if there is one
+    $error = get_transient('slf_login_error');
+    delete_transient('slf_login_error'); // Clear the error after displaying it
+    $output = $error ? '<p style="color:red;">' . esc_html($error) . '</p>' : '';
+
+
+    $output .= '<form method="post" action="' . esc_url($_SERVER['REQUEST_URI']) . '">';
+    $output .= wp_nonce_field('slf_login_action', 'slf_login_nonce');
+    $output .= '<p><label for="username">Username</label><br>';
+    $output .= '<input type="text" name="username" required></p>';
+    $output .= '<p><label for="password">Password</label><br>';
+    $output .= '<input type="password" name="password" required></p>';
+    $output .= '<p><input type="submit" name="submit" value="Login"></p>';
+    $output .= '</form>';
+
+    return $output;
+}
+
+function slf_handle_login() {
+    if (isset($_POST['submit'])) {
+
+        if (!isset($_POST['slf_login_nonce']) || !wp_verify_nonce($_POST['slf_login_nonce'], 'slf_login_action')) {
+            set_transient('slf_login_error', 'Nonce verification failed.', 5);
+            return;
+        }
+
+        $username = sanitize_user($_POST['username']);
+        $password = sanitize_text_field($_POST['password']);
+
+        $credentials = array(
+            'user_login' => $username,
+            'user_password' => $password,
+            'remember' => true
+        );
+
+        $user = wp_signon($credentials, false);
+
+        if (is_wp_error($user)) {
+            set_transient('slf_login_error', 'Login failed: ' . $user->get_error_message(), 5);
+        } else {
+            wp_redirect(home_url());
+            exit;
+        }
+    }
+}
+add_action('init', 'slf_handle_login');
+
+function slf_login_shortcode() {
+    return slf_login_form();
+}
+add_shortcode('simple_login', 'slf_login_shortcode');

style.css

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+/* Style container for the form */
+form#scf_contact_form,
+form#simple_login_form {
+    max-width: 400px;
+    margin: 0 auto;
+    padding: 20px;
+    border: 1px solid #ddd;
+    border-radius: 5px;
+    background-color: #f9f9f9;
+    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
+}
+
+/* Label styling */
+form#scf_contact_form label,
+form#simple_login_form label {
+    font-weight: bold;
+    color: #333;
+    display: block;
+    margin-bottom: 5px;
+}
+
+/* Input and textarea styling */
+form#scf_contact_form input[type="text"],
+form#scf_contact_form input[type="email"],
+form#scf_contact_form input[type="password"],
+form#scf_contact_form textarea,
+form#simple_login_form input[type="text"],
+form#simple_login_form input[type="password"] {
+    width: 100%;
+    padding: 10px;
+    margin-bottom: 15px;
+    border: 1px solid #ccc;
+    border-radius: 4px;
+    font-size: 16px;
+    transition: border-color 0.3s ease;
+}
+
+form#scf_contact_form input[type="text"]:focus,
+form#scf_contact_form input[type="email"]:focus,
+form#scf_contact_form input[type="password"]:focus,
+form#scf_contact_form textarea:focus,
+form#simple_login_form input[type="text"]:focus,
+form#simple_login_form input[type="password"]:focus {
+    border-color: #0073aa;
+}
+
+/* Submit button styling */
+form#scf_contact_form input[type="submit"],
+form#simple_login_form input[type="submit"] {
+    background-color: #0073aa;
+    color: #fff;
+    padding: 10px 15px;
+    font-size: 16px;
+    border: none;
+    border-radius: 4px;
+    cursor: pointer;
+    transition: background-color 0.3s ease;
+}
+
+form#scf_contact_form input[type="submit"]:hover,
+form#simple_login_form input[type="submit"]:hover {
+    background-color: #005d8f;
+}
+
+/* Error message styling */
+form#scf_contact_form .scf-success,
+form#simple_login_form .scf-success {
+    color: green;
+    margin-bottom: 15px;
+}
+
+form#scf_contact_form p[style="color:red;"],
+form#simple_login_form p[style="color:red;"] {
+    color: red;
+    font-weight: bold;
+    margin-bottom: 15px;
+}