PHP Object-nested data manipulation

Question

I have two classes, A and B, that work together, like this:

Global scope instantiate Aobject.
Aobject instantiate Bobject as a public property.
Bobject contains Carray as a public property.

QUESTION:

How do I manipulate Carray from global scope, without copying it, AND without explicitly pointing at A->B->C for each operation?

PS: This is a minimal example. My chains could end up rather long, if no solution exists.

@u_mulder. A getter, containing what? ... I won't copy the array ... — Ole Sauffaus
– Ole Sauffaus, Commented Jul 18, 2015 at 10:44
If you need values of C from class A - create A::getC { return A->B->C; } If you need to set values of C from class A - create A::setC($key, $value) { A->B->C[$key] = $value; } — u_mulder
– u_mulder, Commented Jul 18, 2015 at 10:48

ptkoz · Accepted Answer · 2015-07-18 10:46:18Z

1

Use a reference. You will have to use A->B->C only once per scope.

$c = &$A->b->c;
$c['something'] = 'somethiing else';

answered Jul 18, 2015 at 10:46

ptkoz

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3 Comments

Ole Sauffaus Over a year ago

Can that technique pass a reference to A, inside B and global scope only needs to reference the reference in A ... as in each class can pass the reference forward in the chain? ... reference to reference to reference?

ptkoz Over a year ago

Objects are always passed by reference in PHP and you have to explicitly use 'clone' construction to copy them.

ptkoz Over a year ago

And yes, you can do that. ;-)

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