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Doc Bug #65170 SPLHeap next() removes current node
Submitted: 2013-06-30 21:36 UTC Modified: 2015-09-07 23:35 UTC
From: mark at lange dot demon dot co dot uk Assigned: levim (profile)
Status: Closed Package: SPL related
PHP Version: 5.3.26 OS: All
Private report: No CVE-ID: None
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 [2013-06-30 21:36 UTC] mark at lange dot demon dot co dot uk 
Description:
------------
When iterating through an SPLHeap, each node is removed from the heap as you loop through to the next node.
Investigation has suggested that it is the next() method that removes the current node before moving to the next.

Test script:
---------------
https://gist.github.com/MarkBaker/5896053

Expected result:
----------------
There are 7 cities in the heap
FROM NORTH TO SOUTH
Newcastle upon Tyne  +54.9833  -1.5833
Leeds                +53.8100  -1.5500
Manchester           +53.4800  -2.2400
Liverpool            +53.4167  -3.0000
Birmingham           +52.4800  -1.9100
London               +51.5171  -0.1062
Bristol              +51.4600  -2.6000
There are 7 cities in the heap

There should be the same number of city nodes in the heap after iterating through as there were before.


Actual result:
--------------
There are 7 cities in the heap
FROM NORTH TO SOUTH
Newcastle upon Tyne  +54.9833  -1.5833
Leeds                +53.8100  -1.5500
Manchester           +53.4800  -2.2400
Liverpool            +53.4167  -3.0000
Birmingham           +52.4800  -1.9100
London               +51.5171  -0.1062
Bristol              +51.4600  -2.6000
There are 0 cities in the heap

However, there a 0 city nodes left in the heap after iterating through them.

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AllCommentsChangesGit/SVN commitsRelated reports
 [2013-07-03 21:52 UTC] cmbecker69 at gmx dot de 
It seems to me this is rather a documentation issue (it should be
noted that SplHeap::next() discards the top of the heap), as the 
documentation of SplHeap::rewind() shows. And that is consistent 
with the implementation, where spl_ptr_heap_delete_top() is 
explicitely called.
 [2013-09-12 22:59 UTC] levim@php.net
-Type: Bug +Type: Documentation Problem
 [2014-04-17 14:54 UTC] levim@php.net 
Automatic comment from SVN on behalf of levim
Revision: http://svn.php.net/viewvc/?view=revision&revision=333362
Log: Fixes bug 65170
 [2015-09-07 23:35 UTC] cmb@php.net
-Status: Open +Status: Closed -Assigned To: +Assigned To: levim
 [2015-09-07 23:35 UTC] cmb@php.net 
Closing, as already been fixed.
 
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