PHP 4.0 Bug #9718 Updated: Memory leak when passing String values into methods through COM

ID: 9718 User Update by: Jason@hspace.net Status: Open Bug Type: COM related Description: Memory leak when passing String values into methods through COM Disregard my previous example with the classes. I've just tried a test without using classes and it still leaks memory. Consider example below instead, thanks: Code block sets multiple public variables in COM object. In below example, $gbl_obj is an instance of the COM object in the global scope of the PHP page. The public variables are defined as html_example_test01, html_example_test02, html_example_test03, etc. etc. My code block sets over twenty public variables in the COM object. <? Code block sets all public variables in COM object $gbl_obj->html_example_test01 = "Test string #01."; $gbl_obj->html_example_test02 = "Test string #02."; $gbl_obj->html_example_test03 = "Test string #03."; $gbl_obj->html_example_test04 = "Test string #04."; $gbl_obj->html_example_test05 = "Test string #05."; $gbl_obj->html_example_test06 = "Test string #06."; $gbl_obj->html_example_test07 = "Test string #07."; $gbl_obj->html_example_test08 = "Test string #08."; $gbl_obj->html_example_test09 = "Test string #09."; $gbl_obj->html_example_test10 = "Test string #10."; $gbl_obj->html_example_test11 = "Test string #11."; $gbl_obj->html_example_test12 = "Test string #12."; $gbl_obj->html_example_test13 = "Test string #13."; $gbl_obj->html_example_test14 = "Test string #14."; $gbl_obj->html_example_test15 = "Test string #15."; $gbl_obj->html_example_test16 = "Test string #16."; $gbl_obj->html_example_test17 = "Test string #17."; $gbl_obj->html_example_test18 = "Test string #18."; $gbl_obj->html_example_test19 = "Test string #19."; $gbl_obj->html_example_test20 = "Test string #20."; // script does not leak memory when I remove this code block ?> I am using long variable names like html_example_test01 Previous Comments: --------------------------------------------------------------------------- [2001-03-14 09:06:35] Jason@hspace.net Corrections to bug report. Ignore previous example, check with the below example instead. I'm actually assigning values from inside a child class in PHP and accessing the COM object in the base class. eg: <?php class Child { function Child () { Base::instance(); $this->obj->testvar = "This is a test string."; } } class Base { function instance() { $this->obj = new COM("MyObject.MyObject"); } } ?> / Leaks memory when I assign a string to a public variable (testvar) of COM object (obj) from an instance of Child. Disregard my previous examples as I've tested my COM object with a simple string passed as argument to method and it did not leak memory. I think the above memory leak has something to do with PHP's handling of Object Oriented Programming... --------------------------------------------------------------------------- [2001-03-13 23:22:06] Jason@hspace.net Bug #9715 is reclassified under this bug. > Memory leak when passing String value to a static variable in the COM object. > Memory leak when passing String value as an argument in a method exposed by the COM object. > I use VJ++ to write COM objects, as Java handles its own garbage collection. Running php 4.0.5-dev ISAPI in IIS 5.0 --------------------------------------------------------------------------- [2001-03-12 22:18:49] Jason@hspace.net That wasn't it... I tried it without passing a constant, and it's still leaking memory! So this is an outstanding serious bug with no workaround. --------------------------------------------------------------------------- [2001-03-12 21:57:39] Jason@hspace.net Found the problem. It only leaks memory, if I pass a CONSTANT from PHP to the COM object. All I have to do now is rewrite the php so that I'm passing a variable, not a constant. Probably this issue can be closed after someone has a look into it. --------------------------------------------------------------------------- [2001-03-12 21:48:59] Jason@hspace.net I added methods to pass String values into the static variables. Passing String values into method in COM object also leaks memory. Example: COM object has method test(String a) and a static variable b The method sets the variable b to a. In PHP, I execute the COM object's method: $t_obj->test("This is a test string."); Memory leak when passing String into COM object. --------------------------------------------------------------------------- The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online. Full Bug description available at: http://bugs.php.net/?id=9718