--TEST-- Test variations in usage of tan() --INI-- precision = 10 --FILE-- <?php /* * proto float tan(float number) * Function is implemented in ext/standard/math.c */ //Test tan with a different input values $values = array(23, -23, 2.345e1, -2.345e1, 0x17, 027, "23", "23.45", "2.345e1", "nonsense", "1000", "1000ABC", null, true, false); for ($i = 0; $i < count($values); $i++) { $res = tan($values[$i]); var_dump($res); } ?> --EXPECTF-- float(1.588153083) float(-1.588153083) float(8.895619796) float(-8.895619796) float(1.588153083) float(1.588153083) float(1.588153083) float(8.895619796) float(8.895619796) Warning: tan() expects parameter 1 to be double, string given in %s on line %d NULL float(1.470324156) Notice: A non well formed numeric value encountered in %s on line %d float(1.470324156) float(0) float(1.557407725) float(0)