Assuming you're referring to object methods, I take a different stance than Ovid. I like using overloaded methods that match my variable/column names. For instance, if my object represents a database row with a "salary" column,

$object->salary() # returns the value of salary
$object->salary(1234) # sets salary to 1234
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In the end what really matters, though, is that you establish a standard practice and follow it. The exact nature of the practice is less important than your consistancy in adhering to it.

-Matt