Re: [PHP] Overriding core functions

[Arpad Ray]

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:[EMAIL PROTECTED] Sent: Tuesday, August 
22, 2006 7:27 PM
To: Peter Lauri
Cc: php-general@lists.php.net
Subject: Re: [PHP] 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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