1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
--TEST--
Foreach loop tests - foreach operates on the original array if the array is referenced outside the loop.
--FILE--
<?php
// From php.net/foreach:
// "Unless the array is referenced, foreach operates on a copy of the specified array."
echo "\nRemove elements from a referenced array during loop\n";
$refedArray=array("original.0", "original.1", "original.2");
$ref=&$refedArray;
foreach ($refedArray as $k=>$v1) {
array_pop($refedArray);
echo "key: $k; value: $v1\n";
}
echo "\nRemove elements from a referenced array during loop, using &\$value\n";
$refedArray=array("original.0", "original.1", "original.2");
$ref=&$refedArray;
foreach ($refedArray as $k=>&$v2) {
array_pop($refedArray);
echo "key: $k; value: $v2\n";
}
echo "\nAdd elements to a referenced array during loop\n";
$refedArray=array("original.0", "original.1", "original.2");
$ref=&$refedArray;
$count=0;
foreach ($refedArray as $k=>$v3) {
array_push($refedArray, "new.$k");
echo "key: $k; value: $v3\n";
if ($count++>5) {
echo "Loop detected, as expected.\n";
break;
}
}
echo "\nAdd elements to a referenced array during loop, using &\$value\n";
$refedArray=array("original.0", "original.1", "original.2");
$ref=&$refedArray;
$count=0;
foreach ($refedArray as $k=>&$v4) {
array_push($refedArray, "new.$k");
echo "key: $k; value: $v4\n";
if ($count++>5) {
echo "Loop detected, as expected.\n";
break;
}
}
?>
--EXPECT--
Remove elements from a referenced array during loop
key: 0; value: original.0
key: 1; value: original.1
key: 2; value: original.2
Remove elements from a referenced array during loop, using &$value
key: 0; value: original.0
key: 1; value: original.1
Add elements to a referenced array during loop
key: 0; value: original.0
key: 1; value: original.1
key: 2; value: original.2
Add elements to a referenced array during loop, using &$value
key: 0; value: original.0
key: 1; value: original.1
key: 2; value: original.2
key: 3; value: new.0
key: 4; value: new.1
key: 5; value: new.2
key: 6; value: new.3
Loop detected, as expected.
|
