Operator Overloading

[deciacco]

I was wondering if there was a way to do operator overlaoding in php
like you can in c++.

In c++ you can do something like:

cout << myobject; -- and have myobject handle the output.

Is there a way to...

echo myobject; -- and be able to have a custom definded method in
myobject do some kind of output?

Any other suggestions?
( I was thinking of having a custom method called echo in myobject so
one could do echo myobject->echo(); This is not as clean....)

Thanks!!

[Richard Levasseur]

Re: Operator Overloading


deciacco wrote:

I was wondering if there was a way to do operator overlaoding in php
like you can in c++.
>
In c++ you can do something like:
>
cout << myobject; -- and have myobject handle the output.
>
Is there a way to...
>
echo myobject; -- and be able to have a custom definded method in
myobject do some kind of output?
>
Any other suggestions?
( I was thinking of having a custom method called echo in myobject so
one could do echo myobject->echo(); This is not as clean....)
>
Thanks!!

Use the magic method __toString(). Note: it is only invoked when
directly printed. echo "$myobj" will not invoke __toString()

See http://us2.php.net/manual/en/language.oop5.php for more info about
PHP5 objects

[~john]

Re: Operator Overloading

deciacco wrote:

Any other suggestions?
( I was thinking of having a custom method called echo in myobject so
one could do echo myobject->echo(); This is not as clean....)

Richard is correct define a function called __toString() in your class
without whatever class variables you want to print off. Notice that
there are 2 underscores on __toString()

You might want to consider an excellent book called PHP 5 Objects,
Patterns, and Practice... I'm reading it now and it covers many of
PHP's advancent features including OO and design patterns.

~john

[deciacco]

Re: Operator Overloading

Thank you both...that's awsome...I will def look into that
book...thanks for the suggestion!!!

~john wrote:

deciacco wrote:
>

Any other suggestions?
( I was thinking of having a custom method called echo in myobject so
one could do echo myobject->echo(); This is not as clean....)

>
>
Richard is correct define a function called __toString() in your class
without whatever class variables you want to print off. Notice that
there are 2 underscores on __toString()
>
You might want to consider an excellent book called PHP 5 Objects,
Patterns, and Practice... I'm reading it now and it covers many of
PHP's advancent features including OO and design patterns.
>
~john