daily notes

<?php
/**
 * Plugin Name: My Admin Menu Plugin
 * Description: Demonstrates how to create WordPress administration menus.
 * Version: 1.0
 * Author: You
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit; // Prevent direct access
}

/**
 * Hook into the admin menu system
 */
add_action( 'admin_menu', 'my_plugin_register_admin_menu' );

/**
 * Register admin menus
 */
function my_plugin_register_admin_menu() {

    // TOP-LEVEL MENU
    add_menu_page(
        'My Plugin Dashboard',      // Page title
        'My Plugin',                // Menu title
        'manage_options',           // Capability
        'my-plugin',                // Menu slug
        'my_plugin_dashboard_page', // Callback function
        'dashicons-admin-generic',  // Icon
        25                           // Position
    );

    // SUBMENU PAGE
    add_submenu_page(
        'my-plugin',                // Parent slug
        'My Plugin Settings',       // Page title
        'Settings',                 // Menu title
        'manage_options',           // Capability
        'my-plugin-settings',       // Menu slug
        'my_plugin_settings_page'   // Callback function
    );
}

/**
 * Dashboard page callback
 */
function my_plugin_dashboard_page() {

    if ( ! current_user_can( 'manage_options' ) ) {
        return;
    }

    ?>
    <div class="wrap">
        <h1>My Plugin Dashboard</h1>
        <p>This is the main dashboard page of the plugin.</p>
    </div>
    <?php
}

/**
 * Settings page callback
 */
function my_plugin_settings_page() {

    if ( ! current_user_can( 'manage_options' ) ) {
        return;
    }

    ?>
    <div class="wrap">
        <h1>My Plugin Settings</h1>

        <form method="post" action="options.php">
            <?php
                settings_fields( 'my_plugin_settings_group' );
                do_settings_sections( 'my-plugin-settings' );
                submit_button();
            ?>
        </form>
    </div>
    <?php
}

add_option( 'my_plugin_color', 'blue' );

update_option( 'my_plugin_color', 'red' );

$color = get_option( 'my_plugin_color', 'default' );

delete_option( 'my_plugin_color' );

<?php
/**
 * Plugin Name: My Settings Plugin
 * Description: End-to-end example of Admin Menu + Settings & Options API
 * Version: 1.0
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * 1️⃣ ADMIN MENU (ENTRY POINT)
 */
add_action( 'admin_menu', 'my_plugin_add_admin_menu' );

function my_plugin_add_admin_menu() {

    add_menu_page(
        'My Plugin Settings',       // Page title
        'My Plugin',                // Menu title
        'manage_options',           // Capability
        'my-plugin',                // Menu slug
        'my_plugin_settings_page',  // Page callback
        'dashicons-admin-settings'  // Icon
    );
}

/**
 * 2️⃣ REGISTER SETTINGS (SETTINGS API)
 */
add_action( 'admin_init', 'my_plugin_register_settings' );

function my_plugin_register_settings() {

    // Register option (Options API via Settings API)
    register_setting(
        'my_plugin_settings_group', // Settings group
        'my_plugin_options',        // Option name (stored in wp_options)
        'my_plugin_sanitize_options'// Sanitization callback
    );

    // Settings section
    add_settings_section(
        'my_plugin_main_section',   // Section ID
        'Main Settings',             // Title
        'my_plugin_section_text',    // Callback
        'my-plugin'                  // Page slug (menu slug)
    );

    // Settings field
    add_settings_field(
        'enable_feature',            // Field ID
        'Enable Feature',            // Label
        'my_plugin_enable_field',    // Field callback
        'my-plugin',                 // Page slug
        'my_plugin_main_section'     // Section ID
    );
}

/**
 * 3️⃣ SECTION DESCRIPTION
 */
function my_plugin_section_text() {
    echo '<p>Configure the main settings for the plugin.</p>';
}

/**
 * 4️⃣ FIELD HTML
 */
function my_plugin_enable_field() {

    $options = get_option( 'my_plugin_options' );
    $enabled = $options['enable_feature'] ?? '';

    ?>
    <input type="checkbox"
           name="my_plugin_options[enable_feature]"
           value="1"
           <?php checked( 1, $enabled ); ?>>
    <label>Enable the main feature</label>
    <?php
}

/**
 * 5️⃣ SANITIZATION
 */
function my_plugin_sanitize_options( $input ) {

    $output = [];

    $output['enable_feature'] = isset( $input['enable_feature'] ) ? 1 : 0;

    return $output;
}

/**
 * 6️⃣ SETTINGS PAGE (CONNECTED TO ADMIN MENU)
 */
function my_plugin_settings_page() {

    if ( ! current_user_can( 'manage_options' ) ) {
        return;
    }
    ?>
    <div class="wrap">
        <h1>My Plugin Settings</h1>

        <form method="post" action="options.php">
            <?php
                settings_fields( 'my_plugin_settings_group' );
                do_settings_sections( 'my-plugin' );
                submit_button();
            ?>
        </form>
    </div>
    <?php
}

add_action( 'init', 'register_portfolio_cpt' );

function register_portfolio_cpt() {

    register_post_type( 'portfolio', [
        'public' => true,
        'label'  => 'Portfolios',
    ] );
    
    flush_rewrite_rules();
}