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[2004-02-10 11:07 UTC] timjensen at rtsports dot com
Description:
------------
OS: Windows 2000 Server SP4
Server Version: Apache/1.3.27 (Win32) mod_gzip/1.3.26.1a PHP/4.3.5RC2
Using a Visual Basic created COM object with PHP 4.3.5RC2, I always get the following error after 2400 or so pages served:
Warning: (null)(): Unable to obtain IDispatch interface for CLSID {0FE9E8B0-1AA7-4929-83FA-A5441A445D90}: CoInitialize has not been called. in f:\rtff\php\test.php on line 9
Here is the simple test code I use to replicate the problem:
$vb = new COM("gatewaysoftware.Tax");
echo "<h3>" . $vb->Compute($STATE) . "</h3>\n";
$vb->Release();
$vb = null;
With PHP 4.2.1 this problem does not occur and millions of pages can be served with the exact same PHP code, COM
object, and php.ini without the problem appearing.
ab (Apache Bench) can be used to replicate the problem in seconds.
PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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Last updated: Fri Apr 19 05:01:29 2024 UTC |
5.0.0 beta 3 is a little better. I can consistently get 4400 pages served before it can no longer create a COM object. The error is different with 5.0: Failed to create COM object `gatewaysoftware.Tax': Not enough storage is available to complete this operation. ' in f:\RTFF\php\test.php:9 Stack trace: #0 {main} thrown in f:\RTFF\php\test.php on line 9 Windows shows 234k of total commit charge of the available 1.5Gb RAM used at this point. Also note, it looks like Apache 1.3.27 with PHP5 bleeds 4k to 8k of memory for every page served with the COM object creation. Previous version of PHP bled too, but not nearly as much. I tested several version of PHP with apache bench, here are the results: 4.2.1 1,000,000 pages OK 4.2.3 1,000,000 pages OK 4.3.0 Approx 2200 pages, then fails on COM create 4.3.4 Approx 2200 pages, then fails on COM create 4.3.5rc3 Approx 2200 pages, then fails on COM create 5.0.0b3 Approx 4400 pages, then fails on COM createOk, I have tried it with the PHP5-200402102030 snapshot. it fails immediately on the first page served with the following error: Fatal error: Uncaught exception 'com_exception' with message 'Parameter 0: Type mismatch. ' in f:\RTFF\php\test.php:18 Stack trace: #0 {main} thrown in f:\RTFF\php\test.php on line 18 If I change the test PHP code to use a bad variable as input to the COM object's method where it fails, I get a parameter 1 error. So guessing Parameter 0 was the return value, I did some hunting around on the web and found some quotes about the parameter list being 0-based, but the parameter type list being 1-based. Then one-off errors often result parameter 0 always being considered an INT. So I added a test method to my COM object that returns a Visual Basic LONG and re-ran my test code. It can now run 10k plus pages with no errors. Is it required my COM objects must have a return value of INT ? The only problem is I get an "Error Member not found" on the $comobject->Release(); method.