Mon site ne s'affiche plus.

Ci-dessous, le script:
<?php
/*
Plugin Name: WP Super Edit Upgrade Utility
Plugin URI: https://swampthings.org/projects/super-edit/
Description: Utility for upgrading or cleanning up WP Super Edit options. This will deactivate any active dependent plugins.
Author: Jess Planck
Version: 2.4.6
Author URI: https://swampthings.org/

Copyright (c) Jess Planck (http://funroe.net)
WP Super Edit is released under the GNU General Public
License: http://www.gnu.org/licenses/gpl-3.0.txt

This is a WordPress plugin (http://wordpress.org). WordPress is
free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.

For a copy of the GNU General Public License, write to:

Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307
USA

You can also view a copy of the HTML version of the GNU General
Public License at http://www.gnu.org/licenses/gpl-3.0.html
*/

/**
* WP Super Edit Upgrade Utility init
* Function checks for WP Super Edit before allowing any activation
* @global object $wp_super_edit
*/
function wp_super_upgrader_init() {
global $wp_super_edit;

// Deactivate if WP Super Edit is not active & display notice
if ( empty( $wp_super_edit ) || !is_object( $wp_super_edit ) ) add_action( 'admin_notices', 'wp_super_upgrader_shutdown' );;
}
add_action( 'init', 'wp_super_upgrader_init' );


/**
* WP Super Edit Upgrade Utility Admin Shutdown Notification
*/
function wp_super_upgrader_shutdown() {
$current_plugins = get_settings('active_plugins');
$current_plugin_basename = plugin_basename( __FILE__ );
array_splice( $current_plugins, array_search( $current_plugin_basename, $current_plugins ), 1 ); // Array-function!
update_option( 'active_plugins', $current_plugins );

echo '<div class="settings-error error" id="setting-error-settings_updated"><p><strong>';
_e( 'WP Super Edit Plugin Required! Activate WP Super Edit before using. Plugin Deactivated.', 'wp-super-edit' );
echo '</p></div>';
}
// register_activation_hook(__FILE__,'wp_super_edit_upgrader');

function wp_super_edit_upgrader() {
global $wp_super_edit;

// Unregister Stuff for the Super Classes and Super Emotions plugins by default
$wp_super_edit->unregister_tinymce_plugin( 'supercssclasses');
$wp_super_edit->unregister_tinymce_button( 'styleselect' );
$wp_super_edit->unregister_tinymce_plugin( 'superemotions');
$wp_super_edit->unregister_tinymce_button( 'superemotions' );

// 07-2011: Fix bad URL for Font Tools.
$wp_super_edit->unregister_tinymce_plugin( 'fonttools');
$wp_super_edit->register_tinymce_plugin( array(
'name' => 'fonttools',
'nicename' => __( 'Font Tools', 'wp-super-edit' ),
'description' => __( 'Adds the Font Family and Font Size buttons to the editor.', 'wp-super-edit' ),
'provider' => 'tinymce',
'status' => 'no',
'url' => 'none',
'callbacks' => ''
));

// 07-2011: compat2x - DEPRECATE no longer functional
$wp_super_edit->unregister_tinymce_plugin( 'compat2x');

// 04-2011: wp-super-class - name mistake
$wp_super_edit->unregister_tinymce_plugin( 'wp-super-class');

}
add_action('wp_super_edit_mode_run', 'wp_super_edit_upgrader', 5);


function wp_super_edit_upgrader_shutdown() {

echo '<div class="updated settings-error" id="setting-error-settings_updated"><p><strong>';
_e( 'WP Super Edit Upgrade Completed!', 'wp-super-edit' );
echo '</p></div>';

// Deactivate Super Emotions
deactivate_plugins( WP_PLUGIN_DIR . '/wp-super-edit/wp-se-emotions.php' );

// Deactivate Super Clasees
deactivate_plugins( WP_PLUGIN_DIR . '/wp-super-edit/wp-se-cssclasses.php' );

// Deactivate once completed
deactivate_plugins( __FILE__ );
}
add_action('admin_notices', 'wp_super_edit_upgrader_shutdown', 5);

P.S. Est-ce que je ne devrais pas carrément supprimer ultimate-tinymce (dans plugins)?

P.S. (2): Un extrait de la réponse d'AMEN:
"... Par ailleurs, vous pouvez modifier le fichier "php.ini".
Pour y accéder, vous devez vous connecter à votre Espace Client. Ensuite vous cliquez sur le nom de votre domaine et vous cliquez sur l'icône "Hébergement Linux". Puis vous cliquez sur le lien "Gestion PHP.ini" situé dans la section "Actions" et vous effectuez les modifications nécessaires. Enfin vous cliquez sur le bouton "Sauvegarder le fichier"....".
Là encore, j'aurai besoin d'aide...
Remerciements.

Bonjour,
Le site, finalement, s'affiche correctement.
Merci à tous. Comment pourrai-je vous renvoyer l'ascenseur? Un lien, depuis mon site (+ de 30.000 visites/an)?
Quand je pourrai aller sur l'édition de Word Press...
Encore une fois merci et bonne soirée.