partially resolved enabling pluging SEO Meta Tag Info version 2.2.5

and modifying this file /fp-plugins/seometataginfo/plugin.seometataginfo.php
Code:
[Instructions] * Author: FlatPress * Author URI: https://www.flatpress.org */// SEE 'readme.txt' for informationrequire ('inc/hw-helpers.php');require ('inc/class.iniparser.php');require ('inc/migrate_data.php');global $seo_default;global $prepend_description;global $prepend_keywords;// Dynamic definition of allowed characters$unicode_blocks = ['\p{L}', // Letter'\p{N}', // Number'\p{P}', // Punctuation'\p{Zs}', // Separator, space'\p{M}', // Mark];// Additional permitted characters (e.g. emojis, special characters)$extra_chars = '-_,©®✓✔➤➔→➥▶⇒➨★❤♥✘✖✆✈⚠️☎️✉👍😄😃😉😊😁😏😍😎😆😂😐😳😮😵😢😣😟😠🔍☕❗❓';$allowed_characters_regex = '/[^' . implode('', $unicode_blocks) . preg_quote($extra_chars, '/') . ']/u';$seo_default = array('description' => '', // the page description'keywords' => '', // keywords comma seperated e.g. "a,c d,c"'noindex' => '0', // "0" or "1"'nofollow' => '0', // "0" or "1"'noarchive' => '0', // "0" or "1"'nosnippet' => '0' // "0" or "1");// prepend the blog title to description and keywordsglobal $fp_config;$prepend_description = $fp_config ['general'] ['title'] . ' - ';$prepend_keywords = $fp_config ['general'] ['title'] . ', ';// IMPORTANT: migrate data from previous version// Note: If a metatags.ini exists for both// an published entry and a draft entry// the published entry version will be kept.// set 'SEOMETA_MIGRATE_DATA' to 'true' then// create a new entry to force data migration.if (!defined('SEOMETA_MIGRATE_DATA')) {define('SEOMETA_MIGRATE_DATA', false);}// generate Open Graph  /yy/mm/dd/mypage/// /yy/mm/dd/mypage/comments/#comments => /yy/mm/dd/mypage/if (!defined('SEOMETA_HIDECOMMENTS')) {define('SEOMETA_HIDECOMMENTS', true);}// define storagedefine('SEOMETA_DIR', CONTENT_DIR . 'seometa/');define('SEOMETA_DEFAULT_DIR', SEOMETA_DIR . 'default/');define('SEOMETA_ENTRY_DIR', SEOMETA_DIR . 'entries/');define('SEOMETA_STATIC_DIR', SEOMETA_DIR . 'statics/');define('SEOMETA_CATEGORY_DIR', SEOMETA_DIR . 'categories/');define('SEOMETA_TAG_DIR', SEOMETA_DIR . 'tags/');define('SEOMETA_ARCHIVE_DIR', SEOMETA_DIR . 'archives/');/** * This part of the plugin has to interface with * the entry admin panel. * * It saves the meta data of entries/pages. */if (defined('SYSTEM_VER') && version_compare(SYSTEM_VER, '0.1010', '>=') && defined('MOD_ADMIN_PANEL')) {/** * plugin_description_entry class * * This class is used to interface the seo meta tag * with the entry editor. */class plugin_seometatags_entry {/** * "simple" function * * This function adds the Description field to editor */function simple() {global $fp_config;$charset = strtoupper($fp_config ['locale'] ['charset'] ?? 'UTF-8');if (!file_exists(SEOMETA_DEFAULT_DIR . 'metatags.ini')) {$metatags = "[meta]\n";$metatags .= "description=\n";$metatags .= "keywords=\n";$metatags .= "noindex=0\n";$metatags .= "nofollow=0\n";$metatags .= "noarchive=0\n";$metatags .= "nosnippet=0\n";@io_write_file(SEOMETA_DEFAULT_DIR . 'metatags.ini', $metatags);}if ((isset($_REQUEST ['entry']) && empty($_REQUEST ['entry'])) && (isset($_REQUEST ['timestamp']) && !empty($_REQUEST ['timestamp']))) {$id = bdb_idfromtime(BDB_ENTRY, $_REQUEST ['timestamp']);$file_meta = SEOMETA_ENTRY_DIR . $id . '_metatags.ini';} elseif (!empty($_REQUEST ['entry'])) {$id = $_REQUEST ['entry'];$file_meta = SEOMETA_ENTRY_DIR . $id . '_metatags.ini';} elseif (!empty($_REQUEST ['page'])) {$id = $_REQUEST ['page'];$file_meta = SEOMETA_STATIC_DIR . $id . '_metatags.ini';} elseif (isset($_REQUEST ['p'])) {// new blog entry or static page$file_meta = SEOMETA_DEFAULT_DIR . 'metatags.ini';} else {$file_meta = SEOMETA_DEFAULT_DIR . 'metatags.ini';}if (!file_exists($file_meta)) {@io_write_file($file_meta, '');}$cfg = new iniParser($file_meta);$old_desc = $cfg->get('meta', 'description') != false ? wp_specialchars(trim($cfg->get('meta', 'description'))) : (!empty($_REQUEST ['pl_description']) ? $_REQUEST ['pl_description'] : '');$old_keywords = $cfg->get('meta', 'keywords') != false ? wp_specialchars(trim($cfg->get('meta', 'keywords'))) : (!empty($_REQUEST ['pl_keywords']) ? $_REQUEST ['pl_keywords'] : '');$old_noindex = $cfg->get('meta', 'noindex') != false ? wp_specialchars(trim($cfg->get('meta', 'noindex'))) : (!empty($_REQUEST ['pl_noindex']) ? $_REQUEST ['pl_noindex'] : '0');$old_nofollow = $cfg->get('meta', 'nofollow') != false ? wp_specialchars(trim($cfg->get('meta', 'nofollow'))) : (!empty($_REQUEST ['pl_nofollow']) ? $_REQUEST ['pl_nofollow'] : '0');$old_noarchive = $cfg->get('meta', 'noarchive') != false ? wp_specialchars(trim($cfg->get('meta', 'noarchive'))) : (!empty($_REQUEST ['pl_noarchive']) ? $_REQUEST ['pl_noarchive'] : '0');$old_nosnippet = $cfg->get('meta', 'nosnippet') != false ? wp_specialchars(trim($cfg->get('meta', 'nosnippet'))) : (!empty($_REQUEST ['pl_nosnippet']) ? $_REQUEST ['pl_nosnippet'] : '0');$lang = lang_load('plugin:seometataginfo');$string = $lang ['admin'] ['plugin'] ['seometataginfo'];echo '';echo '' . $string ['legend_desc'] . '';echo '' . $string ['description'] . '
';echo '';echo '';echo '' . $string ['input_desc'] . '';echo '
';echo '' . $string ['input_keywords'] . '';echo '
';echo '';$checked = ($old_noindex === '1') ? ' checked="yes"' : '';echo '' . $string ['input_noindex'] . '';echo '';$checked = ($old_nofollow === '1') ? ' checked="yes"' : '';echo '' . $string ['input_nofollow'] . '';echo '';$checked = ($old_noarchive === '1') ? ' checked="yes"' : '';echo '' . $string ['input_noarchive'] . '';echo '';$checked = ($old_nosnippet === '1') ? ' checked="yes"' : '';echo '' . $string ['input_nosnippet'] . '';echo '';echo '
';echo '
';echo '
';return true;}function sanitizeSeoField($input) {global $allowed_characters_regex;if (!is_string($input)) {return '';}$input = preg_replace(['/<[^>]*>/','/<|>/','/\bon\w+\s*=\s*["\'][^"\']*["\']/i'], '', htmlspecialchars_decode($input, ENT_QUOTES));if (!empty($allowed_characters_regex)) {$input = preg_replace($allowed_characters_regex, '', $input);}return trim($input);}function do_save() {global $allowed_characters_regex;if (empty($_POST ['pl_file_meta'])) {return;}$sanitize = function($field) {return isset($_POST [$field]) ? $this->sanitizeSeoField($_POST [$field]) : '';};$metatags = 'description=' . (isset($_POST ['pl_description']) ? $this->sanitizeSeoField($_POST ['pl_description']) : '') . "\n";$metatags .= 'keywords=' . (isset($_POST ['pl_keywords']) ? $this->sanitizeSeoField($_POST ['pl_keywords']) : '') . "\n";$metatags .= 'noindex=' . (isset($_POST ['pl_noindex']) ? trim($_POST ['pl_noindex']) : '0') . "\n";$metatags .= 'nofollow=' . (isset($_POST ['pl_nofollow']) ? trim($_POST ['pl_nofollow']) : '0') . "\n";$metatags .= 'noarchive=' . (isset($_POST ['pl_noarchive']) ? trim($_POST ['pl_noarchive']) : '0') . "\n";$metatags .= 'nosnippet=' . (isset($_POST ['pl_nosnippet']) ? trim($_POST ['pl_nosnippet']) : '0') . "\n";if (isset($allowed_characters_regex) && !empty($allowed_characters_regex)) {$metatags = preg_replace($allowed_characters_regex, '', $metatags);}if ($_POST ['pl_file_meta'] !== SEOMETA_DEFAULT_DIR . 'metatags.ini') {// Existing blog entry or static page (got file name already)...
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