Add html/PHP pages on plugin activation (Wordpress) - php

Question

Well am creating my first wordpress plugin, which should create a page (relatively large) on activation.
Currently i can create a file using :
$_p['post_title'] = $the_page_title;
$_p['post_content'] = '<h1>PAGE CONTENT</h1>';
$_p['post_status'] = 'publish';
$_p['post_type'] = 'page';
$_p['comment_status'] = 'closed';
$_p['ping_status'] = 'closed';
$_p['post_category'] = array(1); // the default 'Uncatrgorised'
// Insert the post into the database
$the_page_id = wp_insert_post( $_p );
The problem is, I cant put all the content of the file(which is large) as string to 'post_content' index. I want to know if there is a way, where i can simply either:
'post_content' => link to the file in my plugin directory
'post_content' => call a function which will return html content as string :( [worst case]
OR, Some more simpler way to achieve the objective.
Please help me.

Answer 1

Well, what i did to solve the problem is:
//**SECTION : 1**
function user_login_foo() {
return get_login_form(); // get_login_form() function will return the html template i want to display.
}
add_shortcode('user_login', 'user_login_foo'); // created a shortcode
**// SECTION: 2**
function get_login_form()
{
ob_start(); ?>
<h3><?php __('Login'); ?></h3>
<form action="" method="post">
<fieldset>
// the login form comes here
</fieldset>
</form>
<?php
return ob_get_clean();
}
function validate_login_user() {
// the login validation logic comes here
}
add_action('init', 'validate_login_user');
SECTION 1: registered a shortcode that will call a function [say,foo1()] and return the value.
The function foo1() calls another a function [say foo2()] which returns a clean html form in response to the call (when the shortcode is called).
SECTION 2: In this section I defined the function foo2(), within which the html form [login form] is defined and returned to foo1() [where it is displayed].
Then i created an action [ add_action('init', 'validate_login_user'); ] which will call the function validate_login_user() on initialization, inside this function i checked for isset(METHOD[username]) and isset(METHOD[password]) and then do respective logic.
Like this i created multiple [shortcodes] for each of the pages I wanted to create at the time of activation,
Then :
**step 1:** register_activation_hook(__FILE__,'activation_plugin');
**step 2:** activation_plugin(){
'390' => [ // '390' is page id
'post_title' => 'Page title say login',
'post_content' => "[user_login]",
'post_status' => 'publish',
'post_type' => 'page',
'comment_status' => 'closed',
'ping_status' => 'closed',
'post_category' => array(1)
],
'391' => [
'post_title' => 'page title 2',
'post_content' => "[short_code2]",
'post_status' => 'publish',
'post_type' => 'page',
'comment_status' => 'closed',
'ping_status' => 'closed',
'post_category' => array(1)
],
// like this add multiple shortcodes
}
// this foreach will create all the pages
foreach ($_ as $key => $value) {
$the_page_title = $value['post_title'];
$the_page_name = $value['post_title'];
// the menu entry...
delete_option($value['post_title']);
add_option($value['post_title'], $the_page_title, '', 'yes');
// the slug...
delete_option($value['post_title']);
add_option($value['post_title'], $the_page_name, '', 'yes');
// the id...
delete_option($key);
add_option($key, '0', '', 'yes');
$the_page = get_page_by_title( $the_page_title );
if ( ! $the_page ) {
$the_page_id = wp_insert_post( $value );
}
else {
$the_page_id = $the_page->ID;
$the_page->post_status = 'publish';
$the_page_id = wp_update_post( $the_page );
}
delete_option( $key );
add_option( $key, $the_page_id );
}

Answer 2

Create Page On Plugin activation with content
$page_content= 'Content of page';
$demo_page = array(
'comment_status' => 'closed',
'ping_status' => 'closed' ,
'post_author' => 1,
'post_content' => $page_content,
'post_date' => date('Y-m-d H:i:s'),
'post_name' => 'page_name',//display on address bar
'post_status' => 'publish' ,
'post_title' => 'Page Display Name',
'post_type' => 'page',
);
//insert page and save the id
$demo_page_value = wp_insert_post( $demo_page, false );
//save the id in the database
update_option( 'testpage', $$demo_page_value );

Answer 3

You Use and Guide and read this link How to Create plugin and pages https://codex.wordpress.org/Creating_Options_Pages