1--TEST--
2Test array_walk() function : usage variations - anonymous callback function
3--FILE--
4<?php
5/* Prototype  : proto bool array_walk(array $input, string $funcname [, mixed $userdata])
6 * Description: Apply a user function to every member of an array
7 * Source code: ext/standard/array.c
8*/
9
10/*
11* Passing anonymous(run-time) callback function with following variations:
12*   with one parameter
13*   two parameters
14*   three parameters
15*   extra parameters
16*   without parameters
17*/
18
19echo "*** Testing array_walk() : anonymous function as callback ***\n";
20
21$input = array(2, 5, 10, 0);
22
23echo "-- Anonymous function with one argument --\n";
24var_dump( array_walk($input, function($value) { var_dump($value); echo "\n"; }));
25
26echo "-- Anonymous function with two arguments --\n";
27var_dump( array_walk($input, function($value, $key) { var_dump($key); var_dump($value); echo "\n"; }));
28
29echo "-- Anonymous function with three arguments --\n";
30var_dump( array_walk($input, function($value, $key, $user_data) { var_dump($key); var_dump($value); var_dump($user_data); echo "\n"; }, 10));
31
32echo "-- Anonymous function with one more argument --\n";
33var_dump( array_walk($input, function($value, $key, $user_data) { var_dump($key); var_dump($value); var_dump($user_data); echo "\n"; }, 20, 30));
34
35echo "-- Anonymous function with null argument --\n";
36var_dump( array_walk( $input, function() { echo "1\n"; }));
37echo "Done"
38?>
39--EXPECTF--
40*** Testing array_walk() : anonymous function as callback ***
41-- Anonymous function with one argument --
42int(2)
43
44int(5)
45
46int(10)
47
48int(0)
49
50bool(true)
51-- Anonymous function with two arguments --
52int(0)
53int(2)
54
55int(1)
56int(5)
57
58int(2)
59int(10)
60
61int(3)
62int(0)
63
64bool(true)
65-- Anonymous function with three arguments --
66int(0)
67int(2)
68int(10)
69
70int(1)
71int(5)
72int(10)
73
74int(2)
75int(10)
76int(10)
77
78int(3)
79int(0)
80int(10)
81
82bool(true)
83-- Anonymous function with one more argument --
84
85Warning: array_walk() expects at most 3 parameters, 4 given in %s on line %d
86NULL
87-- Anonymous function with null argument --
881
891
901
911
92bool(true)
93Done
94