@@ -159,7 +159,7 @@ |
||
| 159 | 159 | while (true) { |
| 160 | 160 | |
| 161 | 161 | //initialize array if not already initialized |
| 162 | - $this->tree[$level][$class] ??= []; |
|
| 162 | + $this->tree[$level][$class] ?? = []; |
|
| 163 | 163 | |
| 164 | 164 | //get parameter from constructor |
| 165 | 165 | //can return error when constructor not declared |