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<?php function tryit($operand) { echo str_pad($operand, 4, ' ', STR_PAD_RIGHT); try { eval("\$a = []; \$a $operand \$a;"); echo "ok\n"; } catch (\Throwable $e) { echo $e->getMessage(), "\n"; } } tryit('+'); tryit('-'); tryit('-'); tryit('*'); tryit('/'); tryit('.'); tryit('**'); tryit('<=>');
Output for git.master, git.master_jit, rfc.property-hooks
+ ok - Unsupported operand types: array - array - Unsupported operand types: array - array * Unsupported operand types: array * array / Unsupported operand types: array / array . Warning: Array to string conversion in /in/mt071(6) : eval()'d code on line 1 Warning: Array to string conversion in /in/mt071(6) : eval()'d code on line 1 ok ** Unsupported operand types: array ** array <=> ok

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