Form action URL

ppf-form-action-url.php

<?php

add_filter( 'ppwp_ppf_action_url', 'ppwp_get_custom_ppf_action_url', 999, 1 );
/**
 * Replace the default URL to current page.
 *
 * @param string $default_url The default URL.
 *
 * @return mixed
 */
function ppwp_get_custom_ppf_action_url( $default_url ) {
	$callback_value = rawurlencode( apply_filters( PPW_Constants::HOOK_CALLBACK_URL, get_permalink() ) );

	// Get current page.
	return add_query_arg(
		array(
			'action'                           => 'ppw_postpass',
			PPW_Constants::CALL_BACK_URL_PARAM => $callback_value,
		),
		null
	);
}

add_action( 'wp', 'ppwp_handle_ppf_form_submit', 5 );
/**
 * Handle PPWP From Submit.
 */
function ppwp_handle_ppf_form_submit() {
	// Check whether or not WordPress has already sent headers.
	// Need to check it to prevent the error: Warning: cannot modify header information – headers already sent by ...
	global $wp_did_header;
	if ( ! $wp_did_header || ! isset( $_POST['post_password'] ) ) { // phpcs:ignore
		return;
	}

	// Only allow URL with having action querystring is ppw_postpass.
	if ( ! isset( $_GET['action'] ) || 'ppw_postpass' !== $_GET['action'] ) { // phpcs:ignore
		return;
	}

	if ( ! class_exists( 'PPW_Password_Services' ) || ! array_key_exists( 'post_password', $_POST ) ) { // phpcs:ignore
		return;
	}

	// Get post_id from referer url if Post data is not exist post_id.
	$post_id = ppw_get_post_id_from_request();
	if ( empty( $post_id ) ) {
		return;
	}
	
	if ( ! isset( $_POST['post_password'] ) ) { // phpcs:ignore
		return;
	}

	$password = wp_unslash( $_POST['post_password'] ); // phpcs:ignore

	$free_services = new PPW_Password_Services();
	$free_services->handle_after_enter_password_in_password_form( $post_id, $password );
}