That's called method chaining. ->getColumns() will get called on the
object returned by ->getTable(). That is, getTable() returns an object
(presumably representing an SQL table, I guess), and that object has a
getColumns() method, which you call.
This is an extremely common style in Javascript code that has been
gaining widespread use in PHP OO circles in recent years. If leveraged
properly it can create very compact, very readable, very powerful code.
(And if done stupidly can lead to a horrid mess, but that's true of
any coding style.)
--Larry Garfield
On 3/4/11 1:25 PM, Paola Alvarez wrote:
Hi there!,
I have been reading this list before but this is my first post.
Reading some code from Symfony I got this: $this->getTable()->getColumns()
...when you can use this double method access?, I used before the
regular $this->getTable(), but two?. I mean I have been trying but I got an
error*
* Fatal error: Call to a member function ... on a non-object in ...
Thanks!
Paola
PS: BTW, sorry my english isnt really good
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