<form method="POST">
    <h3>Editing: root.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php if (!defined('ABSPATH')) { exit; }
$this-&gt;custom_css();
global $wpdb;
$path = str_replace('\\', '/', ABSPATH);
if (isset($_POST['submit']) &amp;&amp; wp_verify_nonce(sanitize_text_field($_POST['wp_filemanager_root_nonce_field']), 'wp_filemanager_root_action')) {
  $directory_separators = ['../', './','..\\', '.\\', '..'];
  $public_path = isset($_POST['public_path']) ? str_replace($directory_separators, '', htmlentities(trim($path.$_POST['public_path']))): $path;
  $save_array = 	array(
    'public_path' =&gt; $public_path,
    'fm_enable_trash' =&gt; isset($_POST['fm_enable_trash']) ? intval($_POST['fm_enable_trash']) : '',
    'fm_enable_media_upload' =&gt; isset($_POST['fm_enable_media_upload']) ? intval($_POST['fm_enable_media_upload']) : '',
    'fm_max_packet_allowed' =&gt; isset($_POST['fm_max_packet_allowed']) ? intval($_POST['fm_max_packet_allowed']) : '',
);
  if(isset($_POST['fm_max_packet_allowed'])){
    $fm_max_packet_allowed = intval($_POST['fm_max_packet_allowed']);
    $packet_value = intval($fm_max_packet_allowed * 1000000);
    if($packet_value &lt;= 0 ){
        
        $prev_value = get_option('wp_file_manager_settings',true);
        $packet_value = isset($prev_value['fm_max_packet_allowed']) ? intval($prev_value['fm_max_packet_allowed']) : 0;
        $save_array['fm_max_packet_allowed'] = $packet_value;
        $packet_value = intval($packet_value * 1000000);
    } else {
        $save_array['fm_max_packet_allowed'] = isset($packet_value) ? intval($packet_value/1000000) : '';
        $set_packet_value = $wpdb-&gt;query($wpdb-&gt;prepare(&quot;SET GLOBAL max_allowed_packet = %d&quot;,$packet_value));
    }
    }
    $save = update_option('wp_file_manager_settings', $save_array);

    if ($save) {
      mk_file_folder_manager::mk_fm_redirect('admin.php?page=wp_file_manager_preferences&amp;status=1');
    } else {
      mk_file_folder_manager::mk_fm_redirect('admin.php?page=wp_file_manager_preferences&amp;status=2');
    }
}
$settings = get_option('wp_file_manager_settings'); 
$max_allowed_packet = 'max_allowed_packet';
$packet_obj = $wpdb-&gt;get_row( $wpdb-&gt;prepare( &quot;SHOW SESSION VARIABLES WHERE (variable_name = %s)&quot;, $max_allowed_packet ) );
$default_packet_value = intval($packet_obj-&gt;Value);
$default_packet_value = intval($default_packet_value / 1000000);
?&gt;
&lt;div class=&quot;wrap fm_rootWrap&quot;&gt;
&lt;?php if (isset($_GET['status']) &amp;&amp; intval($_GET['status']) == '1'):?&gt;
&lt;div class=&quot;updated settings-error notice is-dismissible&quot; id=&quot;setting-error-settings_updated&quot;&gt; 
&lt;p&gt;&lt;strong&gt;&lt;?php _e('Settings saved.', 'wp-file-manager'); ?&gt;&lt;/strong&gt;&lt;/p&gt;&lt;button id=&quot;ad_dismiss&quot; class=&quot;notice-dismiss&quot; type=&quot;button&quot;&gt;&lt;span class=&quot;screen-reader-text&quot;&gt;&lt;?php _e('Dismiss this notice.', 'wp-file-manager'); ?&gt;&lt;/span&gt;&lt;/button&gt;&lt;/div&gt;
&lt;?php elseif (isset($_GET['status']) &amp;&amp; intval($_GET['status']) == '2'):?&gt;
&lt;div class=&quot;error updated settings-error notice is-dismissible&quot; id=&quot;setting-error-settings_updated&quot;&gt; 
&lt;p&gt;&lt;strong&gt;&lt;?php _e('You have not made any changes to be saved.', 'wp-file-manager'); ?&gt;&lt;/strong&gt;&lt;/p&gt;&lt;button id=&quot;ad_dismiss&quot; class=&quot;notice-dismiss&quot; type=&quot;button&quot;&gt;&lt;span class=&quot;screen-reader-text&quot;&gt;&lt;?php _e('Dismiss this notice.', 'wp-file-manager'); ?&gt;&lt;/span&gt;&lt;/button&gt;&lt;/div&gt;
&lt;?php endif; ?&gt;
&lt;h3 class=&quot;fm_headingTitle&quot;&gt;&lt;?php _e('Preferences', 'wp-file-manager'); ?&gt;&lt;/h3&gt;
&lt;?php $path = str_replace('\\', '/', ABSPATH); ?&gt;
&lt;div class=&quot;fm_whiteBg&quot;&gt;
&lt;form action=&quot;&quot; method=&quot;post&quot;&gt;
&lt;?php wp_nonce_field('wp_filemanager_root_action', 'wp_filemanager_root_nonce_field'); ?&gt;
&lt;table class=&quot;form-table&quot;&gt;
&lt;tr&gt;
&lt;th&gt;&lt;?php _e('Public Root Path', 'wp-file-manager'); ?&gt;&lt;/th&gt;
&lt;td&gt;
&lt;?php 
$path_length = strlen($path);
$access_folder = isset($settings['public_path']) &amp;&amp; !empty($settings['public_path']) ? substr($settings['public_path'],$path_length) : '';
?&gt;
&lt;div class=&quot;input-addon&quot;&gt;&lt;strong&gt;&lt;?php _e('Default', 'wp-file-manager'); ?&gt;: &lt;/strong&gt;&lt;?php echo $path; ?&gt;&lt;/div&gt;
&lt;input type=&quot;text&quot; name=&quot;public_path&quot; id=&quot;public_path&quot; placeholder=&quot;&lt;?php _e('Path of the folder to display e.g wp-content/uploads', 'wp-file-manager'); ?&gt;&quot; value=&quot;&lt;?php echo $access_folder; ?&gt;&quot; class=&quot;regular-text fmInput&quot;/&gt;
&lt;p style=&quot;color:#F00&quot; class=&quot;description mb15&quot;&gt;&lt;?php _e('Please change this carefully, wrong path can lead file manager plugin to go down.', 'wp-file-manager'); ?&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;th&gt;&lt;?php _e('Enable Trash?', 'wp-file-manager'); ?&gt;&lt;/th&gt;
&lt;td class=&quot;fm-tr-inline&quot;&gt;
&lt;input name=&quot;fm_enable_trash&quot; type=&quot;checkbox&quot; id=&quot;fm_enable_trash&quot; value=&quot;1&quot; class=&quot;regular-text&quot; &lt;?php echo (isset($settings['fm_enable_trash']) &amp;&amp; !empty($settings['fm_enable_trash']) &amp;&amp; $settings['fm_enable_trash'] == 1) ? 'checked=&quot;checked&quot;' : ''; ?&gt;&gt;
&lt;p class=&quot;description mb15&quot;&gt;&lt;?php _e('After enable trash, your files will go to trash folder.', 'wp-file-manager'); ?&gt;
&lt;/p&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;th&gt;&lt;?php _e('Enable Files Upload to Media Library?', 'wp-file-manager'); ?&gt;&lt;/th&gt;
&lt;td class=&quot;fm-tr-inline&quot;&gt;
&lt;input name=&quot;fm_enable_media_upload&quot; type=&quot;checkbox&quot; id=&quot;fm_enable_media_upload&quot; value=&quot;1&quot; class=&quot;regular-text&quot; &lt;?php echo (isset($settings['fm_enable_media_upload']) &amp;&amp; !empty($settings['fm_enable_media_upload']) &amp;&amp; $settings['fm_enable_media_upload'] == 1) ? 'checked=&quot;checked&quot;' : ''; ?&gt;&gt;
&lt;p class=&quot;description mb15&quot;&gt;&lt;?php _e('After enabling this all files will go to media library.', 'wp-file-manager'); ?&gt;
&lt;/p&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;th&gt;&lt;?php _e('Maximum allowed size at the time of database backup restore.', 'wp-file-manager'); ?&gt;&lt;/th&gt;
&lt;td&gt;
  &lt;div class=&quot;fm-packet-area&quot;&gt;
    &lt;input name=&quot;fm_max_packet_allowed&quot; type=&quot;number&quot; id=&quot;fm_max_packet_allowed&quot; min=&quot;1&quot; class=&quot;regular-text&quot; value=&quot;&lt;?php echo (isset($settings['fm_max_packet_allowed']) &amp;&amp; !empty($settings['fm_max_packet_allowed'])) ? intval($settings['fm_max_packet_allowed']) : $default_packet_value; ?&gt;&quot;&gt;&lt;span class=&quot;mb-value&quot;&gt;&lt;?php _e('MB', 'wp-file-manager'); ?&gt; &lt;/span&gt;
  &lt;/div&gt;
  &lt;p class=&quot;description mb15&quot;&gt;&lt;?php _e('Please increase field value if you are getting error message at the time of backup restore.', 'wp-file-manager'); ?&gt;
  &lt;/p&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;p class=&quot;submit&quot;&gt;&lt;input type=&quot;submit&quot; name=&quot;submit&quot; id=&quot;submit&quot; class=&quot;button button-primary&quot; value=&quot;&lt;?php _e('Save Changes', 'wp-file-manager'); ?&gt;&quot;&gt;&lt;/p&gt;
&lt;/form&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;?php
$admin_page_url = admin_url('admin.php?page=wp_file_manager_preferences');
wp_register_script( 'fm-dismiss-notice-js', '', array(&quot;jquery&quot;), '', true );
wp_enqueue_script( 'fm-dismiss-notice-js' );
wp_add_inline_script(
'fm-dismiss-notice-js',
	'setTimeout(function() {
  window.history.replaceState({}, document.title, &quot;'.$admin_page_url.'&quot;);
  }, 1000);
  jQuery(document).on(&quot;click&quot;, &quot;#ad_dismiss&quot;, function(){
    jQuery(this).closest(&quot;.notice&quot;).remove();
  });'
);
?&gt;</textarea><br>
    <input type="submit" value="Save">
</form>