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administrator/manifests/packages/jlsitemap/script.php

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+<?php
+/**
+ * @package    JLSitemap Package
+ * @version    1.12.0
+ * @author     Joomline - joomline.ru
+ * @copyright  Copyright (c) 2010 - 2022 Joomline. All rights reserved.
+ * @license    GNU/GPL license: http://www.gnu.org/copyleft/gpl.html
+ * @link       https://joomline.ru/
+ */
+
+defined('_JEXEC') or die;
+
+use Joomla\CMS\Factory;
+use Joomla\CMS\Language\Text;
+use Joomla\CMS\Version;
+
+class pkg_jlsitemapInstallerScript
+{
+	/**
+	 * Minimum PHP version required to install the extension
+	 *
+	 * @var  string
+	 *
+	 * @since  1.4.0
+	 */
+	protected $minimumPhp = '5.6';
+
+	/**
+	 * Minimum Joomla! version required to install the extension
+	 *
+	 * @var  string
+	 *
+	 * @since  1.4.0
+	 */
+	protected $minimumJoomla = '3.9.0';
+
+	/**
+	 * Method to check compatible.
+	 *
+	 * @throws  Exception
+	 *
+	 * @since  1.4.0
+	 */
+	function preflight()
+	{
+		// Check old Joomla!
+		if (!class_exists('Joomla\CMS\Version'))
+		{
+			JFactory::getApplication()->enqueueMessage(JText::sprintf('PKG_JLSITEMAP_ERROR_COMPATIBLE_JOOMLA',
+				$this->minimumJoomla), 'error');
+
+			return false;
+		}
+
+		$app      = Factory::getApplication();
+		$jversion = new Version();
+
+		// Check PHP
+		if (!(version_compare(PHP_VERSION, $this->minimumPhp) >= 0))
+		{
+			$app->enqueueMessage(Text::sprintf('PKG_JLSITEMAP_ERROR_COMPATIBLE_PHP',
+				$this->minimumPhp), 'error');
+
+			return false;
+		}
+
+		// Check Joomla version
+		if (!$jversion->isCompatible($this->minimumJoomla))
+		{
+			$app->enqueueMessage(Text::sprintf('PKG_JLSITEMAP_ERROR_COMPATIBLE_JOOMLA',
+				$this->minimumJoomla), 'error');
+
+			return false;
+		}
+
+		return true;
+	}
+}