관리-도구

편집 파일: stats_standard_deviation.phpt

--TEST-- stats_standard_deviation() --INI-- serialize_precision=14 --FILE-- <?php $a=array(4, 1, 7); $dev=stats_standard_deviation($a); var_dump(sprintf("%2.9f", $dev)); var_dump(stats_standard_deviation(array())); $a=array(5,7,8,10,10); var_dump(stats_standard_deviation($a,1)); ?> --EXPECTF-- string(11) "2.449489743" Warning: stats_standard_deviation(): The array has zero elements in %s on line %d bool(false) float(2.1213203435596)