Re: Overriding core functions

[Arpad Ray <arpad@xxxxxxxxxxx>]

You can't just define a new function with the same name. The only way I 
know to literally redefine the function is using the runkit extension - 
http://pecl.php.net/package/runkit
That allows you to rename functions as well as moving them, so you could 
rename it to something like old_mysql_query() then define your own 
mysql_query().

Arpad

Alex Turner wrote:
> It may be possible to override the core function - I don't  actually 
> know.  If you just define a new function with the same function it might
> work OK.
>
> The snag I see coming at you like a tonne of bricks is 'how do you 
> call the original function once you have overridden it.'.  This like 
> like calling SUPER. in Java.
>
> AJ
>
> Peter Lauri wrote:
> > Yes, that could solve it. However, my question was if I can override the
> > core functions :) Similar that I can do Parent::myFunction() in a 
> > subclass,
> > I want to do that, but with core functions :)
> >
> > -----Original Message-----
> > From: Jochem Maas [mailto:jochem@xxxxxxxxxxxxx] Sent: Tuesday, August 
> > 22, 2006 7:27 PM
> > To: Peter Lauri
> > Cc: php-general@xxxxxxxxxxxxx
> > Subject: Re:  Overriding core functions
> >
> > Peter Lauri wrote:
> > > Hi,
> > >
> > >  
> > >
> > > I want to add some functionality when calling the mysql_query():
> > >
> > >  
> >
> > function my_query($Query) {
> >
> >              //do stuff before
> >
> >              mysql_query($Query);
> >
> >              //do things after
> >
> > }
> >
> > // or something like:
> >
> > class PeteDB {
> >    var $conn;
> >
> >    function PeteDB($db, $usr, $pwd, $etc) {
> >     $this->conn = mysql_connect($db, $usr, $pwd, $etc);
> >     if (!is_resource($this->conn)) die('db is useless'); //
> > trigger_error()
> >    }
> >
> >    function query($qry/*, $args*/) {
> >     // do stuff
> >     $r = mysql_query($qry, $this->conn);
> >     // do more stuff
> >     return $r;
> >    }
> > }
> >
> > /*
> > tada!
> >
> > hint: always use some kind of wrapper for things like db related 
> > functions
> > (because it allows for stuff like this and, for instance, makes it alot
> > easier to
> > switch dbs - because you only have to change code in one place, not 
> > counting
> > any db-specific
> > sql floating around your app)
> > */
> >
> > >  
> > >
> > > This would just be for one project where I want to record all 
> > > Queries and
> > > the result of them, creating an own logging function.
> > >  
> > >
> > > I did a lot of Google, but no article that I found that take care of 
> > > this
> > > subject.
> > >
> > >  
> > >
> > > /Peter
> > >
> > >  
> > >
> > >  
> > >
> > >  

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