PHP Method chaining Confusion

Question

i have been lately introduced to method chaining, and am not sure if what I\'m doing here is illegal, or I\'m doing it wrong. I have a database Class like:

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Answer 1

Method chaining works by returning an object from a function.

$obj = someFunction();
$obj->someMethod();

someFunction returns an object which has a method someMethod, which you can call. Very simple stuff. You can write it like this, without explicitly storing the returned object in a variable:

someFunction()->someMethod();

The ->someMethod() simply works on whatever value someFunction returns.

So to use method chaining, you need to return an object from your methods. An object can also return itself with return $this, so you can chain methods of the same object on itself.