1--TEST-- 2Test abs() function : basic functionality 3--INI-- 4precision = 14 5--FILE-- 6<?php 7/* Prototype : number abs ( mixed $number ) 8 * Description: Returns the absolute value of number. 9 * Source code: ext/standard/math.c 10 */ 11 12echo "*** Testing abs() : basic functionality ***\n"; 13 14$values = array(23, 15 -23, 16 2.345e1, 17 -2.345e1, 18 0x17, 19 027, 20 "23", 21 "-23", 22 "23.45", 23 "2.345e1", 24 "-2.345e1", 25 null, 26 true, 27 false); 28 29for ($i = 0; $i < count($values); $i++) { 30 $res = abs($values[$i]); 31 var_dump($res); 32} 33?> 34===Done=== 35--EXPECTF-- 36*** Testing abs() : basic functionality *** 37int(23) 38int(23) 39float(23.45) 40float(23.45) 41int(23) 42int(23) 43int(23) 44int(23) 45float(23.45) 46float(23.45) 47float(23.45) 48int(0) 49int(1) 50int(0) 51===Done===