Issue #2620280 by joelpittet: PHP7 possible compatibility issue

Author: joelpittet

includes/message.admin.inc

@@ -21,7 +21,7 @@ class MessageTypeUIController extends EntityDefaultUIController {
     form_state_values_clean($form_state);
     foreach ($form_state['values'] as $key => $value) {
       if ($key != 'message_type_fields') {
-        $entity->$key = $value;
+        $entity->{$key} = $value;
       }
     }
     // Invoke all specified builders for copying form values to entity

includes/message.message_type.inc

@@ -165,7 +165,7 @@ class MessageType extends Entity {
     }
 
     // Let the metadata wrapper deal with the language.
-    $property = $property->language($langcode)->$options['field name'];
+    $property = $property->language($langcode)->{$options['field name']};
 
     $delta = $options['partial delta'];
     $count = $field['cardinality'] == 1 ? 1 : $property->count();

includes/views/handlers/message_handler_field_message_render.inc

@@ -72,7 +72,7 @@ class message_handler_field_message_render extends views_handler_field {
 
   function render($values) {
     $field_alias = $this->field_alias;
-    if (!empty($values->$field_alias) && $message = message_load($values->$field_alias)) {
+    if (!empty($values->{$field_alias}) && $message = message_load($values->{$field_alias})) {
       $options = array(
         'field name' => $this->options['field_name'],
         'partials' => $this->options['partials'],

message.module

@@ -513,7 +513,7 @@ function _message_delete_messages($field_names, $entity_id, $last_mid = 0, $rang
         // check each entity.
         $refrences_count = 0;
         for ($i = 0; $i < $count; $i++) {
-          if ($wrapper->$field_name->get($i)->value()) {
+          if ($wrapper->{$field_name}->get($i)->value()) {
             $refrences_count++;
           }
         }