diff --git a/owark.php b/owark.php
index 365733f..80a5c54 100644
--- a/owark.php
+++ b/owark.php
@@ -1,8 +1,8 @@
 <?php
-/*  Copyright 2011 Eric van der Vlist (vdv@dyomedea.com)
+/*  Copyright 2011-2020 Eric van der Vlist (vdv@dyomedea.com)
 
     This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License, version 2, as 
+    it under the terms of the GNU General Public License, version 2, as
     published by the Free Software Foundation.
 
     This program is distributed in the hope that it will be useful,
@@ -19,7 +19,7 @@
 Plugin Name: owark
 Plugin URI: http://owark.org
 Description: Tired of broken links? Archive yours with owark, the Open Web Archive!
-Version: 0.1
+Version: 0.2
 Author: Eric van der Vlist
 Author URI: http://eric.van-der-vlist.com
 License: GLP2
@@ -34,7 +34,7 @@ if (!class_exists("Owark")) {
         private $post_type = "";
         private $version = '0.2';
         private $notices = "";
-        
+
         /**
          * Class constructor
          *
@@ -67,7 +67,7 @@ if (!class_exists("Owark")) {
             add_filter ( 'comment_text', array($this, 'comment_filter'));
             add_filter ( 'get_comment_author_link', array($this, 'comment_filter'));
 
-            add_action('owark_schedule_event', array(Owark, 'schedule'));
+            add_action('owark_schedule_event', array('Owark', 'schedule'));
             if ( !wp_next_scheduled( 'owark_schedule_event', array('occurrences' => 30) ) ) {
 		        wp_schedule_event(time(), 'hourly', 'owark_schedule_event', array('occurrences' => 30));
 	        }
@@ -133,7 +133,7 @@ if (!class_exists("Owark")) {
             if (!is_dir(dirname(__FILE__) . '/archives')) {
                 @mkdir(dirname(__FILE__) . '/archives');
                 if (!is_dir(dirname(__FILE__) . '/archives')) {
-                    $this->notices = $this->notices . "<div class=\"error fade\"><p><strong>The Open Web Archive has not been able to create the folder /archives in its installation directory. Please create it by hand and make it writable for the web server.</strong></p></div>";                        
+                    $this->notices = $this->notices . "<div class=\"error fade\"><p><strong>The Open Web Archive has not been able to create the folder /archives in its installation directory. Please create it by hand and make it writable for the web server.</strong></p></div>";
                 }
             }
 
@@ -149,17 +149,18 @@ if (!class_exists("Owark")) {
             // Check that wget is installed
 
             $output = array();
-            exec('/usr/bin/wget -V', &$output);
+            exec('/usr/bin/wget -V', $output);
 
 
             if ( empty($output) ) {
-                $this->notices = $this->notices . "<div class=\"error fade\"><p><strong>The Open Web Archives is not able to run wget and retrieve the pages to archive. Please check that wget is installed and on the default path.</strong></p></div>";
+                $this->notices = $this->notices .
+									"<div class=\"error fade\"><p><strong>The Open Web Archives is not able to run GNU wget and retrieve the pages to archive. Please check that wget is installed and on the default path.</strong></p></div>";
             }
 
             // We need as least version 1.11 or higher
             $helper = preg_match('/GNU Wget ([0-9\.]+) /', $output[0], $wget_version);
-            if ( $wget_version[1] < '1.11' ) {
-                $this->notices = $this->notices . "<div class=\"error fade\"><p><strong>The Open Web Archives needs wget version 1.11 or higher.</strong><br />Version read: {$wget_version[0]}</p></div>";
+            if ( $wget_version[0] < '1.11' ) {
+                $this->notices = $this->notices . "<div class=\"error fade\"><p><strong>The Open Web Archives needs GNU wget version 1.11 or higher.</strong><br />Version read: {$wget_version[0]}</p></div>";
             }
 
             if ($this->notices != '') {
@@ -439,7 +440,7 @@ if (!class_exists("Owark")) {
                 $loc = '/wp-content/plugins/owark' . substr($link->arc_location, $pos);
             $arc_loc = home_url() . $loc;
 
-            // The file name is either index.html or guessed from the URL 
+            // The file name is either index.html or guessed from the URL
             if ($home_url[strlen($home_url)] == '/') {
                 $file_location = '.'. $loc .'/index.html';
             } else {
@@ -480,7 +481,7 @@ if (!class_exists("Owark")) {
                 $matches = NULL;
                 // <meta http-equiv="Content-Type" content="text/xml; charset=iso-8859-1"/>
                 if (preg_match('/<meta\s*http-equiv\s*=\s*["\']Content-Type["\']\s+content\s*=\s*["\'][^"\'>]*charset\s*=\s*([^"\'>]+)\s*["\']/si',
-                        $content, &$matches) > 0) {
+                        $content, $matches) > 0) {
                     $encoding = $matches[1];
                 } else {
                     $encoding = mb_detect_encoding($content);
@@ -543,12 +544,12 @@ if (!class_exists("Owark")) {
                 $date = date('c');
                 $relpath = '/archives/'. str_replace('%2F', '/', urlencode(preg_replace('/https?:\/\//', '', $url->final_url))) . '/' . $date;
                 $path = dirname(__FILE__).$relpath;
-                //mkdir($path, $recursive=true);                                           
+                //mkdir($path, $recursive=true);
 
                 $output = array();
                 $status = 0;
                 exec("wget -t3 -E -H -k -K -p -nd -nv --timeout=60 --user-agent=\"Mozilla/5.0 (compatible; owark/0.1; http://owark.org/)\" -P $path {$url->final_url}",
-                    &$output, &$status);
+                    $output, $status);
 
                 $q = $wpdb->insert("{$wpdb->prefix}owark", array(
                     'url' => $url->final_url,
@@ -557,7 +558,7 @@ if (!class_exists("Owark")) {
                     'arc_location' => $relpath));
 
                 if ($occurrences > 0) {
-                    wp_schedule_single_event(time() + 90, 'owark_schedule_event', array('occurrences' => $occurrences - 1));    
+                    wp_schedule_single_event(time() + 90, 'owark_schedule_event', array('occurrences' => $occurrences - 1));
                 }
 
             }