- Updates code to work with PHP 5.3. Closes #307

lib/Config/Env.php

@@ -36,8 +36,9 @@ class Env {
     self::$views_path = self::$path . '/views';
     self::$assets_path = self::$path . '/assets';
     self::$assets_url = plugins_url('/assets', $file);
-    self::$temp_path = wp_upload_dir()['path'];
-    self::$temp_URL = wp_upload_dir()['url'];
+    $wp_upload_dir = wp_upload_dir();
+    self::$temp_path = $wp_upload_dir['path'];
+    self::$temp_URL = $wp_upload_dir['url'];
     self::$languages_path = self::$path . '/lang';
     self::$lib_path = self::$path . '/lib';
     self::$plugin_prefix = 'mailpoet_';
@@ -74,15 +75,16 @@ class Env {
   }
 
   static function isPluginActivated() {
-    $activatesPlugins = get_option('active_plugins');
+    $activated_plugins = get_option('active_plugins');
+    $plugin_basename = plugin_basename(__FILE__);
     $isActivated = (
       in_array(
         sprintf('%s/%s.php', basename(self::$path), self::$plugin_name),
-        $activatesPlugins
+        $activated_plugins
       ) ||
       in_array(
-        sprintf('%s/%s.php', explode('/', plugin_basename(__FILE__))[0], self::$plugin_name),
-        $activatesPlugins
+        sprintf('%s/%s.php', explode('/', $plugin_basename[0]), self::$plugin_name),
+        $activated_plugins
       )
     );
     return ($isActivated) ? true : false;

lib/Mailer/Methods/SendGrid.php

@@ -20,10 +20,11 @@ class SendGrid {
       $this->url,
       $this->request($newsletter, $subscriber)
     );
+    $result_body = json_decode($result['body'], true);
     return (
       !is_wp_error($result) === true &&
       !preg_match('!invalid!', $result['body']) === true &&
-      !isset(json_decode($result['body'], true)['errors']) === true &&
+      !isset($result_body['errors']) === true &&
       wp_remote_retrieve_response_code($result) === 200
     );
   }

lib/Segments/WP.php

@@ -61,10 +61,10 @@ class WP {
     $segment = Segment::getWPUsers();
 
     // count WP users
-    $users_count = \count_users()['total_users'];
+    $users_count = \count_users();
     $linked_subscribers_count = $segment->subscribers()->count();
 
-    if($users_count !== $linked_subscribers_count) {
+    if($users_count['total_users'] !== $linked_subscribers_count) {
       $linked_subscribers = Subscriber::select('wp_user_id')
         ->whereNotNull('wp_user_id')
         ->findArray();

lib/Subscribers/ImportExport/Import/Import.php

@@ -318,8 +318,8 @@ class Import {
               $value
             );
           }, $count, $subscribers_data[$column]);
-      }, $subscriber_custom_fields)[0];
-    foreach(array_chunk($subscribers, 200) as $data) {
+      }, $subscriber_custom_fields);
+    foreach(array_chunk($subscribers[0], 200) as $data) {
       if($action === 'create') {
         SubscriberCustomField::createMultiple(
           $data