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Bug #37965 Multi-dimensional array between PHP and COM
Submitted: 2006-06-29 21:03 UTC Modified: 2021-05-16 04:22 UTC
Votes:14
Avg. Score:4.1 ± 1.4
Reproduced:11 of 11 (100.0%)
Same Version:5 (45.5%)
Same OS:8 (72.7%)
From: mcboog at zonnet dot nl Assigned: cmb (profile)
Status: No Feedback Package: COM related
PHP Version: 5.1.4 OS: Windows XP Professional
Private report: No CVE-ID: None
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 [2006-06-29 21:03 UTC] mcboog at zonnet dot nl
Description:
------------
As noticed in two previous bug-reports (//http://bugs.php.net/bug.php?id=35956 & //http://bugs.php.net/bug.php?id=33108) there is a problem with retrieving a multi-dimensional array from a COM-object. This problem is addressed on the website of Zend (http://www.zend.com/manual/faq.com.php, question #2), but should be resolved in PHP5 (http://www.zend.com/manual/ref.com.php, Arrays and Array-style COM properties).

Reproduce code:
---------------
$obj = new COM('com.object.version');
$varIn = new Variant;
$varOutSimple = new Variant;
$varOutComplex = new Variant;
$obj->internal_com_method($varIn, $varOutSimple, $varOutComplex)

This method has te following definition (part of output of com_print_typeinfo($obj)):
function internal_com_method(
/* VT_I4 [3] [in] */ $varIn,
/* VT_PTR [26] [in][out] --> VT_VARIANT [12]  */ &$varOutSimple,
/* VT_PTR [26] [in][out] --> VT_VARIANT [12]  */ &$varOutComplex
) { /* Method internal_com_method }

$varIn is just an integer. $varOutSimple is a single-dimension array, $varOutComplex is a double-dimension array.

Calling NumberOfFields;
1. print $varOutSimple->NumberOfFields;
2. print $varOutComplex->NumberOfFields;

Count
3. print count($varOutSimple);
4. print count($varOutComplex);

Getting value with string as key
5. print $varOutSimple['key'];
6. print $varOutComplex['key'];

Doing foreach:
7. foreach ($varOutSimple as $key => $value) {
 print $value;
}
8. foreach ($varOutComplex as $key => $value) {
 print $value;
}


Expected result:
----------------
1. output 11
2. output 52
3. output 11
4. output 52
5. output $value
6. output $value
7. output $value
8. output $value

Actual result:
--------------
1. output 11
2. Error: Uncaught exception 'com_exception' with message 'this variant has no properties'.
3. output 1 (irrelevant, works at 5. with direct string-key access)
4. output 52
5. output $value
6. Apache (Apache/2.0.55 (Win32) ) crashes
7. Error:  Uncaught exception 'Exception' with message 'Object of type variant did not create an Iterator'
8. Error: Can only handle single dimension variant arrays (this array has 2) & (NB!) Uncaught exception 'Exception' with message 'Object of type variant did not create an Iterator'

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 [2006-07-05 09:06 UTC] mcboog at zonnet dot nl
Is there a reason why there is still no reaction on my bug report?
 [2006-07-05 21:13 UTC] mcboog at zonnet dot nl
Forget everything above.

Description:
When accessing a multi-dim array from COM-object Apache2 crashes with error [Wed Jul 05 22:50:21 2006] [notice] Parent: child process exited with status 3221225477 -- Restarting. This error-code seems to be related with array access problems.
When I use the COM-object with VBScript I can access the value of the multi-dim array with: multiArray(1,1), which should have an equivalent in PHP by $multiArray[1][1].

Reproduce code:
<?php
$obj = new COM('com_object');
$obj->function_call($multiArray);
print $multiArray[1][1];
?>

Expected result:
output value.

Actual result:
Apache crashes.
 [2006-07-05 21:20 UTC] tony2001@php.net
Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php for *NIX and
http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32

Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.


 [2006-07-06 12:10 UTC] mcboog at zonnet dot nl
Following the instructions for Generating a backtrace on Win32 gave me this backtrace:

PHP5TS! 100af45c()
 [2006-07-06 12:40 UTC] mcboog at zonnet dot nl
Sorry man, never done this before... 
Now I got the following backtrace:

convert_to_long_base(_zval_struct * 0x100ea6d5, int 0) line 306 + 9 bytes
saproxy_read_dimension(_zval_struct * 0x10076460, _zval_struct * 0x100369b1, int 17481848, void * * * 0x010ac064) line 176
ZEND_FETCH_DIM_R_SPEC_CV_CONST_HANDLER(_zend_execute_data * 0x10019515, void * * * 0x010ac530) line 20802
execute(_zend_op_array * 0x7c9106eb, void * * * 0x1000948d) line 92 + 12 bytes
NTDLL! 7c9106eb()
NTDLL! 7c9106eb()
 [2006-07-06 12:49 UTC] tony2001@php.net
Assigned to the maintainer.
 [2013-12-13 07:47 UTC] wez@php.net
-Status: Assigned +Status: Open -Assigned To: wez +Assigned To:
 [2021-05-03 11:58 UTC] cmb@php.net
-Status: Open +Status: Feedback -Assigned To: +Assigned To: cmb
 [2021-05-03 11:58 UTC] cmb@php.net
Is this still an issue with any of the actively supported PHP
versions[1]?

[1] <https://www.php.net/supported-versions.php>
 [2021-05-16 04:22 UTC] php-bugs at lists dot php dot net
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
 
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