1--TEST--
2Test array_rand() function : usage variation - invalid values for 'req_num' parameter
3--FILE--
4<?php
5/*
6* Test behaviour of array_rand() function when associative array and
7* various invalid values are passed to the 'input' and 'req_num'
8* parameters respectively
9*/
10
11echo "*** Testing array_rand() : with invalid values for 'req_num' ***\n";
12
13// initialise associative arrays
14$input = array(
15  1 => 'one', 2.2 => 'float key', 0.9 => 'decimal key',
16  2e2 => 'exp key1', 2000e-3 => 'negative exp key',
17  0xabc => 2748, 0x12f => '303', 0xff => "255",
18  0123 => 83, 012 => 10, 010 => "8"
19);
20
21// Testing array_rand() function with various invalid 'req_num' values
22// with valid num_req values
23echo"\n-- With default num_req value --\n";
24var_dump( array_rand($input) );  // with default $num_req value
25echo"\n-- With num_req = 1 --\n";
26var_dump( array_rand($input, 1) );  // with valid $num_req value
27
28// with invalid num_req value
29echo"\n-- With num_req = 0 --\n";
30try {
31    var_dump( array_rand($input, 0) );  // with $num_req=0
32} catch (\ValueError $e) {
33    echo $e->getMessage() . "\n";
34}
35
36echo"\n-- With num_req = -1 --\n";
37try {
38    var_dump( array_rand($input, -1) );  // with $num_req=-1
39} catch (\ValueError $e) {
40    echo $e->getMessage() . "\n";
41}
42
43echo"\n-- With num_req = -2 --\n";
44try {
45    var_dump( array_rand($input, -2) );  // with $num_req=-2
46} catch (\ValueError $e) {
47    echo $e->getMessage() . "\n";
48}
49
50echo"\n-- With num_req more than number of members in 'input' array --\n";
51try {
52    var_dump( array_rand($input, 13) );  // with $num_req=13
53} catch (\ValueError $e) {
54    echo $e->getMessage() . "\n";
55}
56
57?>
58--EXPECTF--
59*** Testing array_rand() : with invalid values for 'req_num' ***
60
61-- With default num_req value --
62int(%d)
63
64-- With num_req = 1 --
65int(%d)
66
67-- With num_req = 0 --
68array_rand(): Argument #2 ($num) must be between 1 and the number of elements in argument #1 ($array)
69
70-- With num_req = -1 --
71array_rand(): Argument #2 ($num) must be between 1 and the number of elements in argument #1 ($array)
72
73-- With num_req = -2 --
74array_rand(): Argument #2 ($num) must be between 1 and the number of elements in argument #1 ($array)
75
76-- With num_req more than number of members in 'input' array --
77array_rand(): Argument #2 ($num) must be between 1 and the number of elements in argument #1 ($array)
78