RE: [PHP] Function returning a reference - how ?!?

change your createParent function to return by reference: function &createParent() { return new Parent; } it returns 'two' and 'two' for me Regards, - reynard >Hi all, > >I came across the following weird situation. I don't get it, I hope some of >you can explain the logic of it all. > >[begin code]------------------------------- ><?php > >/* Define class Parent. Its constructor sets an instance of Child in >property $child and passes itself to Child's constructor. */ >class Parent >{ > var $child; > var $property = 'one'; > > function Parent() > { > $this->child = &new Child($this); > } >} > >/* Define class Child. Its constructor assigns a reference of the Parent >object that contains this Child object to property $parent. */ >class Child >{ > var $parent; > > function Child(&$p) > { > $this->parent = &$p; > } >} > >/* This function instantiates and returns a new Parent class. */ >function createParent() >{ > return new Parent; >} > >/* $p is a reference of the Parent object created by createParent(). */ >$p = &createParent(); > >/* The $property property of the Parent object is changed. */ >$p->property = 'two'; > >/* Since $p should be the same object as $p->child->parent, the following >should print twice the same. */ >print $p->property . '<BR>'; >print $p->child->parent->property . '<BR>'; > >?> >[end code]----------------------------------- > >Now the problem is: IT DOES NOT PRINT TWICE THE SAME!!! >Instead it prints 'two' and then 'one', which indicates that >$p->child->parent is another object than $p. The problem is that the object >*returned* by createParent() is not the same object as the object that is >*created* by createParent(). Just replace the line $p = &createParent(); by >$p = &new Parent(); -- this works perfectly fine! Conclusion: createParent() >does not return the object it creates! > >Someone knows why this ain't working and how to solve it?!? Hope so, can't >wait to hear from you guys. > >Thanks in advance, > >Tim Molendijk __________________________________________________________________ The NEW Netscape 7.0 browser is now available. Upgrade now! http://channels.netscape.com/ns/browsers/download.jsp Get your own FREE, personal Netscape Mail account today at http://webmail.netscape.com/