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