Lead Generator root file

lead-generator.php

<?php

/**
 * Plugin Name: Lead Generator Plugin
 * Description: A walkthrough for most of the WordPress plugin development concepts.
 * Version:     1.0.0
 * Author:      Wild Programmers
 * Author URI:  https://www.wildprogrammers.com
 * License:     GPL v3
 * License URI: https://www.gnu.org/licenses/gpl-3.0.html
 * Text Domain: leadGenerator
 * Domain Path: languages
 * 
 * @package Lead Generator Plugin
 * @category Core
 * @author Wild Programmers
 */

/**
 * Activation Hook
 * 
 * Register plugin activation hook.
 * 
 * @package Lead Generator
 * @since 1.0.0
 */
register_activation_hook(__FILE__, 'lgp_install');

/**
 * Plugin Setup (On Activation)
 * 
 * Does the initial setup,
 * save default values for the plugin options.
 * 
 * @package Lead Generator
 * @since 1.0.0
 */
function lgp_install() {

    global $wpdb;

    $options = array(
        'phone_label'		    =>	esc_html__( 'Phone Number', 'leadGenerator' ),
        'email_label'		    =>	esc_html__( 'Email Address', 'leadGenerator' ),
        'budget_label'	    =>	esc_html__( 'Budget', 'leadGenerator' ),
        'min_budget'		    =>	5000,
        'max_budget'		    =>	0,
        'date_inserted_label'	    =>	'Date Inserted',
        'time_inserted_label'     =>  'Time Inserted'
    );
    
    update_option('lgp_options',$options);
}

/**
 * Deactivation Hook
 * 
 * Register plugin deactivation hook.
 * 
 * @package Lead Generator
 *  @since 1.0.0
 */
register_deactivation_hook(__FILE__, 'lgp_deactivation');

/**
 * Plugin Setup (On Deactivation)
 * 
 * @package Lead Generator
 * @since 1.0.0
 */
function lgp_deactivation() {

    lgp_unregister_post_type();
}

/**
 * Uninstallation Hook
 * 
 * Register plugin uninstallation hook.
 * 
 * @package Lead Generator
 *  @since 1.0.0
 */
register_uninstall_hook(__FILE__, 'lgp_uninstallation');

/**
 * Plugin Uninstallation (On Uninstalation)
 * 
 * @package Lead Generator
 * @since 1.0.0
 */
function lgp_uninstallation() {

    // Delete the option
    delete_option('lgp_options');
}