1--TEST-- 2Test variations in usage of atan() 3--INI-- 4precision = 10 5--FILE-- 6<?php 7/* 8 * proto float atan(float number) 9 * Function is implemented in ext/standard/math.c 10*/ 11 12 13//Test atan with a different input values 14 15$values = array(23, 16 -23, 17 2.345e1, 18 -2.345e1, 19 0x17, 20 027, 21 "23", 22 "23.45", 23 "2.345e1", 24 "nonsense", 25 "1000", 26 "1000ABC", 27 null, 28 true, 29 false); 30 31for ($i = 0; $i < count($values); $i++) { 32 $res = atan($values[$i]); 33 var_dump($res); 34} 35 36?> 37--EXPECTF-- 38float(1.527345431) 39float(-1.527345431) 40float(1.528178225) 41float(-1.528178225) 42float(1.527345431) 43float(1.527345431) 44float(1.527345431) 45float(1.528178225) 46float(1.528178225) 47 48Warning: atan() expects parameter 1 to be double, string given in %s on line %d 49NULL 50float(1.569796327) 51 52Notice: A non well formed numeric value encountered in %s on line %d 53float(1.569796327) 54float(0) 55float(0.7853981634) 56float(0) 57