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Bug #35722 links troubles
Submitted: 2005-12-18 04:43 UTC Modified: 2005-12-18 11:11 UTC
Votes:1
Avg. Score:2.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:0 (0.0%)
From: zerkms at mail dot ru Assigned:
Status: Not a bug Package: *General Issues
PHP Version: 5.1.1 OS: independent
Private report: No CVE-ID: None
View Developer Edit
 [2005-12-18 04:43 UTC] zerkms at mail dot ru 
Description:
------------
something strange with links to array and objects

Reproduce code:
---------------
//1st
$a = array('a' => 'zzzz');
$q =& $a['a'];
echo $q;
$a = array('a' => 'qwe');
echo $q;


//2nd
$a = new stdclass();
$a->s = 333;
$q =& $a;
echo $q->s;
$a = new stdclass();
$a->s = 444;
echo $q->s; 

Expected result:
----------------
//1st
zzzzqwe

//2nd
333333

Actual result:
--------------
//1st
zzzzzzzz

//2nd
333444

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 [2005-12-18 11:11 UTC] derick@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

There is nothing wrong here. In the first example you overwrite the whole array with $a = array(\'a\' => \'qwe\'); and you\'re not just updating the first element. This breaks the refererence (and it should do that).

In the second example you overwrite $a with $a = new stdclass();, but as you assigned $q to $a by reference, $a and $q are simply the same variable here. Hence modifying $a->s to 444 changes the s property for $q too.
 
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