--TEST-- gzcompress()/gzuncompress() and invalid params --EXTENSIONS-- zlib --FILE-- getMessage() . \PHP_EOL; } var_dump(gzcompress("", -1)); var_dump(gzcompress("")); var_dump(gzcompress("", 9)); $string = "Answer me, it can't be so hard Cry to relieve what's in your heart Desolation, grief and agony"; var_dump($data1 = gzcompress($string)); var_dump($data2 = gzcompress($string, 9)); try { var_dump(gzuncompress("", 1000)); } catch (\ValueError $e) { echo $e->getMessage() . \PHP_EOL; } try { var_dump(gzuncompress("", -1)); } catch (\ValueError $e) { echo $e->getMessage() . \PHP_EOL; } var_dump(gzuncompress("")); var_dump(gzuncompress("", 9)); var_dump(gzuncompress($data1)); var_dump(gzuncompress($data2)); $data2[4] = 0; var_dump(gzuncompress($data2)); ?> --EXPECTF-- gzcompress(): Argument #2 ($level) must be between -1 and 9 string(%d) "%a" string(%d) "%a" string(%d) "%a" string(%d) "%a" string(%d) "%a" Warning: gzuncompress(): %s error in %s on line %d bool(false) gzuncompress(): Argument #2 ($max_length) must be greater than or equal to 0 Warning: gzuncompress(): %s error in %s on line %d bool(false) Warning: gzuncompress(): %s error in %s on line %d bool(false) string(94) "Answer me, it can't be so hard Cry to relieve what's in your heart Desolation, grief and agony" string(94) "Answer me, it can't be so hard Cry to relieve what's in your heart Desolation, grief and agony" Warning: gzuncompress(): %s error in %s on line %d bool(false)