1--TEST--
2Test uasort() function : usage variations - sort different numeric values
3--FILE--
4<?php
5/* Prototype  : bool uasort(array $array_arg, string $cmp_function)
6 * Description: Sort an array with a user-defined comparison function and maintain index association
7 * Source code: ext/standard/array.c
8*/
9
10/*
11* sorting different types of numeric arrays containing data of following type:
12*  integer, octal, hexadecimal & float
13*/
14
15// comparison function
16/* Prototype : int cmp_function(mixed $value1, mixed $value2)
17 * Parameters : $value1 and $value2 - values to be compared
18 * Return value : 0 - if both values are same
19 *                1 - if value1 is greater than value2
20 *               -1 - if value1 is less than value2
21 * Description : compares value1 and value2
22 */
23function cmp_function($value1, $value2)
24{
25  if($value1 == $value2) {
26    return 0;
27  }
28  else if($value1 > $value2) {
29    return 1;
30  }
31  else {
32    return -1;
33  }
34}
35
36echo "*** Testing uasort() : different numeric arrays as 'array_arg' ***\n";
37
38// Int array
39$int_values = array(0 => 3, 1 => 2, 3 => 100, 4 => 150, 5 => 25, 6 => 350, 7 => 0, 8 => -3, 9 => -1200);
40echo "-- Sorting Integer array --\n";
41var_dump( uasort($int_values, 'cmp_function') );  // expecting: bool(true)
42var_dump($int_values);
43
44// Octal array
45$octal_values = array(0 => 056, 1 => 023, 2 => 00, 3 => 015, 4 => -045, 5 => 01, 6 => -07);
46echo "-- Sorting Octal array --\n";
47var_dump( uasort($octal_values, 'cmp_function') );  // expecting: bool(true)
48var_dump($octal_values);
49
50// Hexadecimal array
51$hex_values = array(0 => 0xAE, 1 => 0x2B, 2 => 0X10, 3 => -0xCF, 4 => 0X12, 5 => -0XF2);
52echo "-- Sorting Hex array --\n";
53var_dump( uasort($hex_values, 'cmp_function') );  // expecting: bool(true)
54var_dump($hex_values);
55
56// Float array
57$float_values = array( 0 => 10.2, 1 => 2.4, 2 => -3.4, 3 => 0, 4 => 0.5, 5 => 7.3e3, 6 => -9.34E-2);
58echo "-- Sorting Float array --\n";
59var_dump( uasort($float_values, 'cmp_function') );  // expecting: bool(true)
60var_dump($float_values);
61
62// empty array
63$empty_array = array();
64echo "-- Sorting empty array --\n";
65var_dump( uasort($empty_array, 'cmp_function') );  // expecting: bool(true)
66var_dump($empty_array);
67
68echo "Done"
69?>
70--EXPECT--
71*** Testing uasort() : different numeric arrays as 'array_arg' ***
72-- Sorting Integer array --
73bool(true)
74array(9) {
75  [9]=>
76  int(-1200)
77  [8]=>
78  int(-3)
79  [7]=>
80  int(0)
81  [1]=>
82  int(2)
83  [0]=>
84  int(3)
85  [5]=>
86  int(25)
87  [3]=>
88  int(100)
89  [4]=>
90  int(150)
91  [6]=>
92  int(350)
93}
94-- Sorting Octal array --
95bool(true)
96array(7) {
97  [4]=>
98  int(-37)
99  [6]=>
100  int(-7)
101  [2]=>
102  int(0)
103  [5]=>
104  int(1)
105  [3]=>
106  int(13)
107  [1]=>
108  int(19)
109  [0]=>
110  int(46)
111}
112-- Sorting Hex array --
113bool(true)
114array(6) {
115  [5]=>
116  int(-242)
117  [3]=>
118  int(-207)
119  [2]=>
120  int(16)
121  [4]=>
122  int(18)
123  [1]=>
124  int(43)
125  [0]=>
126  int(174)
127}
128-- Sorting Float array --
129bool(true)
130array(7) {
131  [2]=>
132  float(-3.4)
133  [6]=>
134  float(-0.0934)
135  [3]=>
136  int(0)
137  [4]=>
138  float(0.5)
139  [1]=>
140  float(2.4)
141  [0]=>
142  float(10.2)
143  [5]=>
144  float(7300)
145}
146-- Sorting empty array --
147bool(true)
148array(0) {
149}
150Done
151