Merge pull request #107 from catalyst/issue106

issue #106: fix PHP deprecated warning

Author: dmitriim

classes/local/tool_dynamic_cohorts/condition/user_custom_profile.php

@@ -85,7 +85,7 @@ protected function get_fields_info(): array {
             switch ($field->datatype) {
                 case self::FIELD_DATA_TYPE_MENU:
                 case self::FIELD_DATA_TYPE_AUTOCOMPLETE:
-                    $options = explode("\n", $field->param1);
+                    $options = explode("\n", (string) $field->param1);
                     $field->param1 = array_combine($options, $options);
                     break;
                 case self::FIELD_DATA_TYPE_TEXT: