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--TEST-- stats_cdf_logistic() --FILE-- <?php // which = 1 : calculate P from (X, MEAN, SD) var_dump(round(stats_cdf_logistic(1, 2, 3, 1), 6)); var_dump(round(stats_cdf_logistic(6, 5, 4, 1), 6)); // which = 2 : calculate X from (P, MEAN, SD) var_dump(round(stats_cdf_logistic(0.417429794, 2, 3, 2), 6)); var_dump(round(stats_cdf_logistic(0.562176501, 5, 4, 2), 6)); // which = 3 : calcualte MEAN from (P, X, SD) var_dump(round(stats_cdf_logistic(0.417429794, 1, 3, 3), 6)); var_dump(round(stats_cdf_logistic(0.562176501, 6, 4, 3), 6)); // which = 4 : calcualte SD from (P, X, MEAN) var_dump(round(stats_cdf_logistic(0.417429794, 1, 2, 4), 6)); var_dump(round(stats_cdf_logistic(0.562176501, 6, 5, 4), 6)); // error cases var_dump(stats_cdf_logistic(1, 2, 3, 0)); // which < 1 var_dump(stats_cdf_logistic(1, 2, 3, 5)); // which > 4 ?> --EXPECTF-- float(0.41743) float(0.562177) float(1) float(6) float(2) float(5) float(3) float(4) Warning: stats_cdf_logistic(): Fourth parameter should be in the 1..4 range in %s on line %d bool(false) Warning: stats_cdf_logistic(): Fourth parameter should be in the 1..4 range in %s on line %d bool(false)