#24631 [NEW]: call_user_func (and call_user_func_array) disrespect returned references

From: matthewb at syrah dot us Operating system: FreeBSD PHP version: 4.3.2 PHP Bug Type: Unknown/Other Function Bug description: call_user_func (and call_user_func_array) disrespect returned references Description: ------------ call_user_func and call_user_func do respect functions that return references. That is, function foo that returns a references to an object, does not return a reference to an object when foo is called via call_user_func. Instead, foo called via call_user_func returns a "copy" of the object. (I'm not sure "copy" is the right word.) See the code example for a concise example of the problem. Note: this may cease to be a problem in PHP5, as it is my understanding that objects will be passed/returned by reference by default. If my you do not understand my description and my reproduce code, email me and I will happily explain it to you. Many thanks. Reproduce code: --------------- <?php $x->var = 1; function & foo (&$x) { return $x; } $y =& foo ($x); print "y->var = ". $y->var. " <br>\n"; $x->var++; print "y->var = ". $y->var. " <br>\n"; $z =& call_user_func ("foo", &$x); print "z->var = ". $z->var. " <br>\n"; $x->var++; print "z->var = ". $z->var. " <br>\n"; $w =& call_user_func_array ("foo", array (&$x)); print "w->var = ". $w->var. " <br>\n"; $x->var++; print "w->var = ". $w->var. " <br>\n"; ?> Expected result: ---------------- y->var = 1 <br> y->var = 2 <br> z->var = 2 <br> z->var = 3 <br> w->var = 3 <br> w->var = 4 <br> Note that I expect z->var and w->var to get inceremented just as y->var gets inceremented. Actual result: -------------- y->var = 1 <br> y->var = 2 <br> z->var = 2 <br> z->var = 2 <br> w->var = 3 <br> w->var = 3 <br> Note that in reality, however, z->var and w-> did not get inceremented. -- Edit bug report at http://bugs.php.net/?id=24631&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=24631&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=24631&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=24631&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=24631&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=24631&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=24631&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=24631&r=support Expected behavior: http://bugs.php.net/fix.php?id=24631&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=24631&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=24631&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=24631&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=24631&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=24631&r=dst IIS Stability: http://bugs.php.net/fix.php?id=24631&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=24631&r=gnused