Bug #71557 [Nab]: Foreach and pointers with multidimensional arrays
| From: | zjoclips at gmail dot com | Date: | Tue, 09 Feb 2016 09:58:30 +0000 |
| Subject: | Bug #71557 [Nab]: Foreach and pointers with multidimensional arrays | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-199124@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=71557&edit=1
ID: 71557
User updated by: zjoclips at gmail dot com
Reported by: zjoclips at gmail dot com
Summary: Foreach and pointers with multidimensional arrays
Status: Not a bug
Type: Bug
Package: *General Issues
Operating System: Linux
PHP Version: Irrelevant
Block user comment: N
Private report: N
New Comment:
Thanks, I was in fault again. Anyway good job with this posts
Previous Comments:
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[2016-02-09 08:58:13] requinix@php.net
See bug #71458
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[2016-02-09 08:42:40] zjoclips at gmail dot com
Description:
------------
Hi, I opened a wrong thread last time, I didn't see the real bug. These bug happens with
foreach and pointer in to declaration of this foreach.
The type of last element of an array was modified from "array" into "&array"
and this create the problem when i use another iteraction in this array. I'm not good to
explain me but the code can do what I cannot.
Ps. You can see the difference on the last element in the two var_dumps: before and after the
foreach with the pointer.
Test script:
---------------
<?php
$array = array(
array("field1" => "content1.1", "field2" =>
"content1.2", "field3" => "content1.3", ),
array( "field1" => "content2.1", "field2" =>
"content2.2", "field3" => "content2.3", ),
array( "field1" => "content3.1", "field2" =>
"content3.2", "field3" => "content3.3", ),
array( "field1" => "content4.1", "field2" =>
"content4.2", "field3" => "content4.3", )
);
echo "<pre>";
var_dump($array);
echo "\n";
foreach($array as &$element){
$element["field2"] = "content modified";
}
var_dump($array);
echo "\n";
foreach($array as $element){
foreach($element as $cell){
echo $cell."\t";
}
echo "\n";
}
echo "</pre>";
Expected result:
----------------
array(4) {
[0]=>
array(3) {
["field1"]=>
string(10) "content1.1"
["field2"]=>
string(10) "content1.2"
["field3"]=>
string(10) "content1.3"
}
[1]=>
array(3) {
["field1"]=>
string(10) "content2.1"
["field2"]=>
string(10) "content2.2"
["field3"]=>
string(10) "content2.3"
}
[2]=>
array(3) {
["field1"]=>
string(10) "content3.1"
["field2"]=>
string(10) "content3.2"
["field3"]=>
string(10) "content3.3"
}
[3]=>
array(3) {
["field1"]=>
string(10) "content4.1"
["field2"]=>
string(10) "content4.2"
["field3"]=>
string(10) "content4.3"
}
}
array(4) {
[0]=>
array(3) {
["field1"]=>
string(10) "content1.1"
["field2"]=>
string(16) "content modified"
["field3"]=>
string(10) "content1.3"
}
[1]=>
array(3) {
["field1"]=>
string(10) "content2.1"
["field2"]=>
string(16) "content modified"
["field3"]=>
string(10) "content2.3"
}
[2]=>
array(3) {
["field1"]=>
string(10) "content3.1"
["field2"]=>
string(16) "content modified"
["field3"]=>
string(10) "content3.3"
}
[3]=>
array(3) {
["field1"]=>
string(10) "content4.1"
["field2"]=>
string(16) "content modified"
["field3"]=>
string(10) "content4.3"
}
}
content1.1 content modified content1.3
content2.1 content modified content2.3
content3.1 content modified content3.3
content4.1 content modified content4.3
Actual result:
--------------
array(4) {
[0]=>
array(3) {
["field1"]=>
string(10) "content1.1"
["field2"]=>
string(10) "content1.2"
["field3"]=>
string(10) "content1.3"
}
[1]=>
array(3) {
["field1"]=>
string(10) "content2.1"
["field2"]=>
string(10) "content2.2"
["field3"]=>
string(10) "content2.3"
}
[2]=>
array(3) {
["field1"]=>
string(10) "content3.1"
["field2"]=>
string(10) "content3.2"
["field3"]=>
string(10) "content3.3"
}
[3]=>
array(3) {
["field1"]=>
string(10) "content4.1"
["field2"]=>
string(10) "content4.2"
["field3"]=>
string(10) "content4.3"
}
}
array(4) {
[0]=>
array(3) {
["field1"]=>
string(10) "content1.1"
["field2"]=>
string(16) "content modified"
["field3"]=>
string(10) "content1.3"
}
[1]=>
array(3) {
["field1"]=>
string(10) "content2.1"
["field2"]=>
string(16) "content modified"
["field3"]=>
string(10) "content2.3"
}
[2]=>
array(3) {
["field1"]=>
string(10) "content3.1"
["field2"]=>
string(16) "content modified"
["field3"]=>
string(10) "content3.3"
}
[3]=>
&array(3) {
["field1"]=>
string(10) "content4.1"
["field2"]=>
string(16) "content modified"
["field3"]=>
string(10) "content4.3"
}
}
content1.1 content modified content1.3
content2.1 content modified content2.3
content3.1 content modified content3.3
content3.1 content modified content3.3
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--
Edit this bug report at https://bugs.php.net/bug.php?id=71557&edit=1