Re: Closures in PHP

On Jan 16, 2008 1:58 AM, Larry Garfield <larry@garfieldtech.com> wrote: > On Tuesday 15 January 2008, Nathan Nobbe wrote: > > > when i said a function would have to be loaded into the interpreter to > > avoid a runtime error > > upon invocation, i didnt mention that its best to programatically verify > it > > can be called before > > letting the runtime error occur (of course you can let that happen if > you > > prefer :)), to avoid it. > > anywho, i prefer the variable function construct more than > > call_user_func(), simply > > because it feels a bit more natural to me, but semantically, they are > the > > same, they just have > > a different syntax is all. i suppose call_user_func() is a bit more > clear > > and might help some > > people when drifting through the code of others. > > cool contrived example, btw ;) > > > > -nathan > > Not true, actually. $function() is considerably faster than > call_user_func() > or call_user_func_array(). call_user_func_array(), however, lets you pass > in > an arbitrary number of parameters while the other two do not. not quite. speed has nothing to do w/ semantics, and if you read the doc on call_user_func() you can pass in a variable number of parameters (which is what i said in my later post). the difference is call_user_func_array() takes an array w/ the parameters to pass to the function it invokes and call_user_func() accepts the standard format for a variable number of parameters. eg. (from php.net) mixed *call_user_func* ( callback $function [, mixed $parameter [, mixed $... ]] ) -nathan