Does PHP provide basic data structures like Set where there is no duplicate objects inside it.
I daresay that sets are not as basic as you imagine them to be since they are typically implemented using balanced binary trees 😉
Unfortunately, as far as I can tell, PHP does not have built-in support for sets, although PHP's associative arrays are maps.
Where can i find information for basic built-in classes that PHP provides?
Generally, most of the basic information about PHP that you will want can be found in the PHP Manual.
