Not to be a punk here, but ... 

$obj->methoda->methodb->methodc

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If you don't know whether or not methoda returns null or not, you need to check for that. And such chains are a sign of bad design (aka TOO MANY OBJECTS!).

In reply to Re: The Null Mull (or, when OO needs more O) by Anonymous Monk
in thread The Null Mull (or, when OO needs more O) by brian_d_foy

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