Wordpress + Elementor: cyrillic in PDF - php

Question

To generate a PDF file with data from the submitted form, I use Dynamic Content PDF Generator for Elementor Pro Form. The problem is with Cyrillic characters - they are displayed in the created pdf file as question marks. The file «DCE_Extension_Form_PDF.php» contains the following code:
<?php
namespace DynamicContentForElementor\Extensions;
use Elementor\Controls_Manager;
use DynamicContentForElementor\DCE_Helper;
use DynamicContentForElementor\DCE_Tokens;
if (!defined('ABSPATH'))
exit; // Exit if accessed directly
function _dce_extension_form_pdf($field) {
switch ($field) {
case 'enabled':
return true;
case 'docs':
return 'https://www.dynamic.ooo/widget/pdf-generator-for-elementor-pro-form/';
case 'description' :
return __('Add PDF Creation Actions to Elementor PRO Form', 'dynamic-content-for-elementor');
}
}
if (!DCE_Helper::is_plugin_active('elementor-pro') || !class_exists('ElementorPro\Modules\Forms\Classes\Action_Base')) {
class DCE_Extension_Form_PDF extends DCE_Extension_Prototype {
public $name = 'Form PDF';
private $is_common = false;
public static $depended_plugins = ['elementor-pro'];
static public function is_enabled() {
return _dce_extension_form_pdf('enabled');
}
public static function get_description() {
return _dce_extension_form_pdf('description');
}
public function get_docs() {
return _dce_extension_form_pdf('docs');
}
}
} else {
class DCE_Extension_Form_PDF extends \ElementorPro\Modules\Forms\Classes\Action_Base {
public $name = 'Form PDF';
public static $depended_plugins = ['elementor-pro'];
public $has_action = true;
static public function is_enabled() {
return _dce_extension_form_pdf('enabled');
}
public static function get_description() {
return _dce_extension_form_pdf('description');
}
public function get_docs() {
return _dce_extension_form_pdf('docs');
}
public static function get_plugin_depends() {
return self::$depended_plugins;
}
static public function get_satisfy_dependencies($ret = false) {
return true;
}
public function get_script_depends() {
return [];
}
public function get_style_depends() {
return [];
}
/**
* Get Name
*
* Return the action name
*
* #access public
* #return string
*/
public function get_name() {
return 'dce_form_pdf';
}
/**
* Get Label
*
* Returns the action label
*
* #access public
* #return string
*/
public function get_label() {
return __('PDF', 'dynamic-content-for-elementor');
}
/**
* Register Settings Section
*
* Registers the Action controls
*
* #access public
* #param \Elementor\Widget_Base $widget
*/
public function register_settings_section($widget) {
$widget->start_controls_section(
'section_dce_form_pdf',
[
'label' => $this->get_label(), //__('DCE', 'dynamic-content-for-elementor'),
'condition' => [
'submit_actions' => $this->get_name(),
],
]
);
$widget->add_control(
'dce_form_pdf_name', [
'label' => __('Name', 'dynamic-content-for-elementor'),
'type' => Controls_Manager::TEXT,
'default' => '[date|U]',
'description' => __('The PDF file name, the .pdf extension will automatically added', 'dynamic-content-for-elementor'),
'label_block' => true,
]
);
$widget->add_control(
'dce_form_pdf_folder', [
'label' => __('Folder', 'dynamic-content-for-elementor'),
'type' => Controls_Manager::TEXT,
'default' => 'elementor/pdf/[date|Y]/[date|m]',
'description' => __('The directory inside /wp-content/uploads/xxx where save the PDF file', 'dynamic-content-for-elementor'),
'label_block' => true,
]
);
$widget->add_control(
'dce_form_pdf_template',
[
'label' => __('Template', 'dynamic-content-for-elementor'),
'type' => 'ooo_query',
'placeholder' => __('Template Name', 'dynamic-content-for-elementor'),
'label_block' => true,
'query_type' => 'posts',
'object_type' => 'elementor_library',
'description' => __('Use a Elementor Template as body fo this PDF', 'dynamic-content-for-elementor'),
]
);
$paper_sizes = array_keys(\Dompdf\Adapter\CPDF::$PAPER_SIZES);
$tmp = array();
foreach ($paper_sizes as $asize) {
$tmp[$asize] = strtoupper($asize);
}
$paper_sizes = $tmp;
$widget->add_control(
'dce_form_pdf_size',
[
'label' => __('Page Size', 'dynamic-content-for-elementor'),
'type' => Controls_Manager::SELECT,
'default' => 'a4',
'options' => $paper_sizes,
]
);
$widget->add_control(
'dce_form_pdf_orientation', [
'label' => __('Page Orientation', 'dynamic-content-for-elementor'),
'type' => Controls_Manager::CHOOSE,
'options' => [
'portrait' => [
'title' => __('Portrait', 'dynamic-content-for-elementor'),
'icon' => 'fa fa-arrows-v',
],
'landscape' => [
'title' => __('Landscape', 'dynamic-content-for-elementor'),
'icon' => 'fa fa-arrows-h',
]
],
'toggle' => false,
'default' => 'portrait',
]
);
$widget->add_control(
'dce_form_pdf_margin', [
'label' => __('Page Margin', 'dynamic-content-for-elementor'),
'type' => Controls_Manager::DIMENSIONS,
'size_units' => ['px', '%', 'em'],
]
);
$widget->add_control(
'dce_form_section_page', [
'label' => __('Sections Page', 'dynamic-content-for-elementor'),
'type' => Controls_Manager::SWITCHER,
'description' => __('Force every Template Section in a new page', 'dynamic-content-for-elementor'),
]
);
/*$widget->add_control(
'dce_form_pdf_background',
[
'label' => __('background', 'elementor'),
'type' => Controls_Manager::MEDIA,
'dynamic' => [
'active' => true,
'categories' => $refl->getConstants(),
],
'placeholder' => __('Select condition field', 'elementor'),
]
);*/
$widget->add_control(
'dce_form_pdf_save', [
'label' => __('Save', 'dynamic-content-for-elementor'),
'type' => Controls_Manager::SWITCHER,
'description' => __('Save the generated PDF file as Media', 'dynamic-content-for-elementor'),
]
);
$widget->add_control(
'dce_form_pdf_title', [
'label' => __('Title', 'dynamic-content-for-elementor'),
'type' => Controls_Manager::TEXT,
'default' => 'Form data by [field id="name"] in [date|Y-m-d H:i:s]',
'description' => __('The PDF file Title', 'dynamic-content-for-elementor'),
'label_block' => true,
'condition' => [
'dce_form_pdf_save!' => '',
],
]
);
$widget->add_control(
'dce_form_pdf_content', [
'label' => __('Description', 'dynamic-content-for-elementor'),
'type' => Controls_Manager::TEXT,
'default' => '[field id="message"]',
'description' => __('The PDF file Description', 'dynamic-content-for-elementor'),
'label_block' => true,
'condition' => [
'dce_form_pdf_save!' => '',
],
]
);
$widget->add_control(
'dce_form_pdf_help', [
'type' => \Elementor\Controls_Manager::RAW_HTML,
'raw' => '<div id="elementor-panel__editor__help" class="p-0"><a id="elementor-panel__editor__help__link" href="'.$this->get_docs().'" target="_blank">'.__( 'Need Help', 'elementor' ).' <i class="eicon-help-o"></i></a></div>',
'separator' => 'before',
]
);
$widget->end_controls_section();
}
/**
* Run
*
* Runs the action after submit
*
* #access public
* #param \ElementorPro\Modules\Forms\Classes\Form_Record $record
* #param \ElementorPro\Modules\Forms\Classes\Ajax_Handler $ajax_handler
*/
public function run($record, $ajax_handler) {
$settings = $record->get('form_settings');
$fields = DCE_Helper::get_form_data($record);
$settings = DCE_Helper::get_dynamic_value($settings, $fields);
$this->dce_elementor_form_pdf($fields, $settings, $ajax_handler);
}
/**
* On Export
*
* Clears form settings on export
* #access Public
* #param array $element
*/
public function on_export($element) {
$tmp = array();
if (!empty($element)) {
foreach ($element as $key => $value) {
if (substr($key, 0, 4) == 'dce_') {
$element[$key];
}
}
}
}
function dce_elementor_form_pdf($fields, $settings = null, $ajax_handler = null) {
global $dce_form, $post;
if (empty($settings['dce_form_pdf_template'])) {
$ajax_handler->add_error_message(__('Error: PDF Template not found or not setted', 'dynamic-content-for-elementor'));
return;
}
// verify Template
$template = get_post($settings['dce_form_pdf_template']);
if (!$template || $template->post_type != 'elementor_library') {
$ajax_handler->add_error_message(__('Error: PDF Template not setted correctly', 'dynamic-content-for-elementor'));
return;
}
$post = get_post($fields['submitted_on_id']); // to retrive dynamic data from post where the form was submitted
$pdf_folder = '/' . $settings['dce_form_pdf_folder'] . '/';
$upload = wp_upload_dir();
$pdf_dir = $upload['basedir'] . $pdf_folder;
$pdf_url = $upload['baseurl'] . $pdf_folder;
$pdf_name = $settings['dce_form_pdf_name'] . '.pdf';
$dce_form['pdf']['path'] = $pdf_dir . $pdf_name;
$dce_form['pdf']['url'] = $pdf_url . $pdf_name;
//var_dump($dce_form); die();
$pdf_html = do_shortcode('[dce-elementor-template id="' . $settings['dce_form_pdf_template'] . '"]');
$pdf_html = DCE_Helper::get_dynamic_value($pdf_html, $fields);
// add CSS
$css = DCE_Helper::get_post_css($settings['dce_form_pdf_template']);
// from flex to table
$css .= '.elementor-section .elementor-container { display: table !important; width: 100% !important; }';
$css .= '.elementor-row { display: table-row !important; }';
$css .= '.elementor-column { display: table-cell !important; }';
$css .= '.elementor-column-wrap, .elementor-widget-wrap { display: block !important; }';
$css = str_replace(':not(.elementor-motion-effects-element-type-background) > .elementor-element-populated', ':not(.elementor-motion-effects-element-type-background)', $css);
$css .= '.elementor-column .elementor-widget-image .elementor-image img { max-width: none !important; }';
$cssToInlineStyles = new \TijsVerkoyen\CssToInlineStyles\CssToInlineStyles();
$pdf_html = $cssToInlineStyles->convert(
$pdf_html,
$css
);
$pdf_html = DCE_Helper::template_unwrap($pdf_html);
// link image from url to path
$site_url = site_url();
//$pdf_html = str_replace('src="'.$site_url, 'src="'.$upload['basedir'], $pdf_html);
// from div to table
//$pdf_html = DCE_Helper::tablefy($pdf_html);
if (is_rtl()) {
// fix for arabic and hebrew
$pdf_html .= '<style>* { font-family: DejaVu Sans, sans-serif; }</style>';
}
if (!empty($settings['dce_form_section_page'])) {
//$pdf_html .= '<style>.elementor-top-section:not(:first-child) { page-break-before: always; }</style>';
$pdf_html .= '<style>.elementor-top-section { page-break-before: always; }.elementor-top-section:first-child { page-break-before: no; }</style>';
}
if (!empty($settings['dce_form_pdf_background'])) {
$bg_path = get_attached_file($settings['dce_form_pdf_background']);
$pdf_html .= '<style>body { background-image: url("'.$bg_path.'"); }</style>';
$pdf_html .= '<style>body { background-repeat: no-repeat; background-position: center; background-size: cover; }</style>';
/*
$data = file_get_contents($bg_path);
$base64 = 'data:image/' . $type . ';base64,' . base64_encode($data);
$pdf_html .= '<style>body { background-image: url(<?php echo $base64 ?>); }</style>';
*/
}
$pdf_html .= '<style>#page { margin: '.$settings['dce_form_pdf_margin']['top'].$settings['dce_form_pdf_margin']['unit'].' '.$settings['dce_form_pdf_margin']['right'].$settings['dce_form_pdf_margin']['unit'].' '.$settings['dce_form_pdf_margin']['bottom'].$settings['dce_form_pdf_margin']['unit'].' '.$settings['dce_form_pdf_margin']['left'].$settings['dce_form_pdf_margin']['unit'].'; }</style>';
//$ajax_handler->add_error_message($pdf_html); return false;
//echo $pdf_html; die();
if (!is_dir($pdf_dir)) {
// create dir
mkdir($pdf_dir, 0755, true);
}
// https://github.com/dompdf/dompdf
//$auth = base64_encode("username:password");
$context = stream_context_create(array(
'ssl' => array(
'verify_peer' => FALSE,
'verify_peer_name' => FALSE,
// 'allow_self_signed'=> TRUE
),
/*'http' => array(
'header' => "Authorization: Basic $auth"
)*/
));
$options = new \Dompdf\Options();
$options->set('isRemoteEnabled', TRUE);
$options->setIsRemoteEnabled(true);
//$options->set('defaultFont', 'Courier');
// instantiate and use the dompdf class
$dompdf = new \Dompdf\Dompdf($options);
$dompdf->setHttpContext($context);
$dompdf->loadHtml($pdf_html);
$dompdf->set_option('isRemoteEnabled', TRUE);
$dompdf->set_option('isHtml5ParserEnabled', true);
// (Optional) Setup the paper size and orientation
$dompdf->setPaper($settings['dce_form_pdf_size'], $settings['dce_form_pdf_orientation']);
// Render the HTML as PDF
$dompdf->render();
// Output the generated PDF to Browser
//$dompdf->stream();
$output = $dompdf->output();
if (!file_put_contents($pdf_dir . $pdf_name, $output)) {
$ajax_handler->add_error_message(__('Error generating PDF', 'dynamic-content-for-elementor'));
}
if ($settings['dce_form_pdf_save']) {
// Insert the post into the database
// https://codex.wordpress.org/Function_Reference/wp_insert_attachment
// $filename should be the path to a file in the upload directory.
$filename = $dce_form['pdf']['path'];
// The ID of the post this attachment is for.
$parent_post_id = $fields['submitted_on_id'];
// Check the type of file. We'll use this as the 'post_mime_type'.
$filetype = wp_check_filetype( basename( $filename ), null );
// Get the path to the upload directory.
$wp_upload_dir = wp_upload_dir();
// Prepare an array of post data for the attachment.
$attachment = array(
'guid' => $wp_upload_dir['url'] . '/' . basename( $filename ),
'post_mime_type' => $filetype['type'],
'post_status' => 'inherit',
'post_title' => $settings['dce_form_pdf_title'],
'post_content' => $settings['dce_form_pdf_content'],
);
// Insert the attachment.
$attach_id = wp_insert_attachment( $attachment, $filename, $parent_post_id );
// Make sure that this file is included, as wp_generate_attachment_metadata() depends on it.
require_once( ABSPATH . 'wp-admin/includes/image.php' );
// Generate the metadata for the attachment, and update the database record.
$attach_data = wp_generate_attachment_metadata( $attach_id, $filename );
wp_update_attachment_metadata( $attach_id, $attach_data );
//set_post_thumbnail( $parent_post_id, $attach_id );
// https://developer.wordpress.org/reference/functions/wp_insert_post/
/*$db_ins = array(
'post_title' => $settings['dce_form_pdf_title'],
'post_status' => 'public',
'post_type' => 'attachment',
'post_content' => $settings['dce_form_pdf_content'],
);
$obj_id = wp_insert_post($db_ins);*/
if ($attach_id) {
$dce_form['pdf']['id'] = $attach_id;
$dce_form['pdf']['title'] = $settings['dce_form_pdf_title'];
$dce_form['pdf']['description'] = $settings['dce_form_pdf_content'];
if (!empty($fields) && is_array($fields)) {
foreach ($fields as $akey => $adata) {
update_post_meta($attach_id, $akey, $adata);
}
}
} else {
$ajax_handler->add_error_message(__('Error saving PDF as Media', 'dynamic-content-for-elementor'));
}
}
}
}
}
I have tried different ways to add fonts and encodings to this code, but my programming knowledge is not enough, so I either received an error when submitting the form, or I received a file with the same question marks.