Re: Adding a few debug helpers to php4.x

Thanks for the replies. First, in response to Stefan... > et@edea:~$ php -r '$a = 2; $b = $a; debug_zval_dump($a);' > long(2) refcount(3) > et@edea:~$ I missed that one. Thanks! With that I'd at least be able to implement ref_count in php. And then in response to Adam... > > ============ (dis)allow_copies(mixed var) ============ > > What about implementing this directly in php? You could use > trigger_error in the constructor to stop the script from executing if > the object is instantiated more than once. I'll end up doing both. I'll do what you've mentioned to get an error from the following code: $s1 = new Singleton(); // Constructor sets non-member var to true $s2 = new Singleton(); // The constructor will fail I need disallow_copies() also though in order to get an error from the following code: $s1 = new Singleton(); // constructor calls disallow_copies($this) $s2 = $s1; // With php4 I get a copy without any function call or the following code: function f($server) { // Bug! Should have been &$server ... } $s1 = new Singleton(); // constructor calls disallow_copies($this) f($s1); // With php4 I get a copy without any function call Finding those bugs when you have tens of thousands of lines of php can be a real headache. That's why I'd very much like a disallow_copies function. Is anyone familiar with the extent of the uninitialized struct issue I faced with the implemention I posted yesterday? Thanks again, Todd