strategies for managing long class files in php

Question

I\'ve got a bunch of functions that I want to move into a class. They\'re currently split into a couple of fairly long files. I\'d prefer not to have one 2500 line file, but as

Answer 1

Usually I do something like this:

class one
{
    public function __get($key)
    {
        // require __DIR__ / $key . php
        // instanciate the sub class
    }

    public function mainMethod()
    {
    }
}

class one_subOne extends one
{
    public function otherMethod()
    {
    }
}

class one_subTwo extends one
{
    public function anotherMethod()
    {
    }
}

$one->mainMethod();
$one->subOne->otherMethod();
$one->subTwo->anotherMethod();