ID: 34358 User updated by: pacha dot shevaev at gmail dot com Reported By: pacha dot shevaev at gmail dot com -Status: Bogus +Status: Open Bug Type: Scripting Engine problem Operating System: * PHP Version: 5.* New Comment:
I'm not an expert in PHP internals but there's a guy(stereofrog) on the SitePoint forum who has a different point of view(http://www.sitepoint.com/forums/showpost.php?p=2146304&postcount=9): [quote] it's 'simply ridiculous. They have a code in zend_compile.c that handles "$this=$x" and copy-pasted that code in the function that comples assignment by reference. This should prevent "$this=&$x" (which is wrong), but for some reason it "prevents" "$x=&$this" as well (which is absolutely correct). It's pure c-level bug and has nothing to do with "new object model" and other blah-blah. [/quote] Previous Comments: ------------------------------------------------------------------------ [2005-09-15 14:27:03] [EMAIL PROTECTED] NOTE: This is about PHP 5. It might have worked in PHP 4 but it does not and will not work in PHP 5. ------------------------------------------------------------------------ [2005-09-15 13:37:28] pacha dot shevaev at gmail dot com I still find it a bug. I need a reference to $this for BC with PHP4 in the following piece of code: function &getRootDataSource() { $root =& $this; while ($root->parent != NULL) { $root =& $root->parent; } return $root; } ------------------------------------------------------------------------ [2005-09-03 13:44:07] [EMAIL PROTECTED] Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php ------------------------------------------------------------------------ [2005-09-03 13:41:15] [EMAIL PROTECTED] Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Objects are already references in PHP 5, thuse there is no sense in ...&$this in any way. ------------------------------------------------------------------------ [2005-09-03 13:36:57] pacha dot shevaev at gmail dot com Description: ------------ PHP 5.1RC1 throws fatal error when some variable gets assigned with $this by reference. However there's a workaround for this fatal error which is very simple: using a helper function which simply returns the passed argument by reference. I'm a bit lost here - what is the expected behavior? Yes, it may seem a bit weird to assign objects by reference in PHP5 but if you keep your code base PHP4 compatible you know what i mean. Reproduce code: --------------- <?php function & getRef(&$ref) { return $ref; } class Foo { function Foo() { //$ref =& getRef($this); //works just fine $ref =& $this; //throws "cannot re-assign $this" fatal $ref->test(); } function test() { echo 'test'; } } $foo = new Foo(); ?> Expected result: ---------------- test Actual result: -------------- Fatal error: Cannot re-assign $this ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=34358&edit=1
