Hi, thanks a lot Alex and Larry for your very clear answer! Paola, On Fri, Mar 4, 2011 at 4:33 PM, larry@xxxxxxxxxxxxxxxx < larry@xxxxxxxxxxxxxxxx> wrote: > 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 >> >> > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >
