Actualización

plugin/hello_world/README.md

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+Hello world plugin
+===
+
+This plugin is a minimal code to serve as example of what a plugin has to contain.
+
+This file will be linked in the plugin settings page through a README button.

plugin/hello_world/index.php

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+<?php
+/**
+ * @package chamilo.plugin.hello_world
+ */
+
+// See also the share_user_info plugin
+
+echo '<div class="well">';
+if (!empty($plugin_info['settings']['hello_world_show_type'])) {
+    echo "<h2>".$plugin_info['settings']['hello_world_show_type']."</h2>";
+} else {
+    echo "<h2>Hello world</h2>";
+}
+
+//Using get_lang inside a plugin
+echo get_lang('HelloPlugin');
+
+echo '</div>';

plugin/hello_world/install.php

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+<?php
+/* PHP code to install the plugin
+ * For example:
+ *
+    // To query something to the database
+
+    $table = Database::get_main_table(TABLE_MAIN_USER); // TABLE_MAIN_USER is a constant check the main/inc/database.constants.inc.php
+    $sql = "SELECT firstname, lastname FROM $table_users ";
+    $users = Database::query($sql);
+
+    You can also use the Chamilo classes
+    $users = UserManager::get_user_list();
+
+ */

plugin/hello_world/lang/english.php

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+<?php
+/**
+ * @copyright (c) 2012 University of Geneva
+ * @license GNU General Public License - http://www.gnu.org/copyleft/gpl.html
+ * @author Laurent Opprecht <laurent@opprecht.info>
+ */
+$strings['HelloPlugin'] = "Hello!";

plugin/hello_world/lang/french.php

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+<?php
+
+$strings['HelloPlugin'] = "Salut!";

plugin/hello_world/lang/spanish.php

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+<?php
+
+$strings['HelloPlugin'] = "Hola chaval!";

plugin/hello_world/plugin.php

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+<?php
+/**
+ * This script is a configuration file for the date plugin.
+ * You can use it as a master for other platform plugins (course plugins are slightly different).
+ * These settings will be used in the administration interface for plugins (Chamilo configuration settings->Plugins).
+ *
+ * @package chamilo.plugin
+ *
+ * @author Julio Montoya <gugli100@gmail.com>
+ */
+/**
+ * Plugin details (must be present).
+ */
+
+/* Plugin config */
+
+//the plugin title
+$plugin_info['title'] = 'Hello world';
+//the comments that go with the plugin
+$plugin_info['comment'] = "Shows a hello world message";
+//the plugin version
+$plugin_info['version'] = '1.0';
+//the plugin author
+$plugin_info['author'] = 'Julio Montoya';
+
+/* Plugin optional settings */
+
+/*
+ * This form will be showed in the plugin settings once the plugin was installed
+ * in the plugin/hello_world/index.php you can have
+ * access to the value: $plugin_info['settings']['hello_world_show_type']
+*/
+
+$form = new FormValidator('hello_world_form');
+
+//A simple select
+$options = ['hello_world' => 'Hello World', 'hello' => 'Hello', 'hi' => 'Hi!'];
+$form->addElement('select', 'show_type', 'Hello world types', $options);
+$form->addButtonSave(get_lang('Save'), 'submit_button');
+
+$plugin_info['settings_form'] = $form;

plugin/hello_world/uninstall.php

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+<?php
+/* PHP code to uninstall the plugin */