note 25812 deleted from language.oop.magic-functions by danbrown

Note Submitter: michael_muir at dstoutput dot com ---- The description isn't particularly clear about this, but it appears that if any variables identified in the array returned by __sleep() are objects, __sleep() will in turn be called on those objects. This is particularly useful if you have many levels of subordinate objects (not subclasses) stored in (for example) arrays. Simply return the array name from the 'top level' object's __sleep() and define a __sleep() for the object's class within the subordinate arrays and it shall be called for each.