Mark Hensler — Sun, 14 Mar 2004 22:18:35 +0000

Chroder wrote: If anyone could give me a link or just explain it a little, that would be great

I don't have many resources, so I often give examples.

I think you've already figured out what you were looking for. I gave the second example to show another application of bitfields.

The _DBG_ constants are bit offsets, rather than bit values. This was necessary as I needed to iterate through the debug array somewhere else in the project. I assigned the bitwise opperations into a boolean array because these values were used frequently. And it was better to waste memory on another boolean variable than to re-perform the bitwise operation everytime the permission/setting needed to be checked. (plus, it's hard to explain to users how to setup the config file with bitfields)

Just something else to consider when using bitfields.

Chroder — Sun, 14 Mar 2004 19:11:17 +0000

Thanks, but I don't understand why your showing me these examples...

Mark Hensler — Sun, 14 Mar 2004 07:25:17 +0000

PHP is not (and I don't believe ever will be) an Object Oriented Programming Language (OOPL). Just because a language allows you to define classes and create objects doesn't mean the langauge is an OOPL.

Java is a good example of an OOPL. Heck, just to perform math opperations, you need to utilize the Math object methods:
Math.pow(base, power)

The example I gave earlier was terrible. I'm going through a change in careers and I'm waking up 5 hours earlier than I'm used to. I feel like I have jet lag.

Here's another snippet from another project. The purpose of this code is to allow the script to function with a failed DB connection. The $cfg array has options which are set in a config file. After a successfull DB connection, the DB is queried for the latest settings and these lines update the $cfg array.

<?php
$cfg['debug']['email']    = (($qry['debugmode'] & pow(2, _DBG_EMAIL)) > 0) ? true : false;
$cfg['debug']['quiet']    = (($qry['debugmode'] & pow(2, _DBG_QUIET)) > 0) ? true : false;
$cfg['debug']['loud']     = (($qry['debugmode'] & pow(2, _DBG_LOUD)) > 0) ? true : false;
$cfg['debug']['logdb']    = (($qry['debugmode'] & pow(2, _DBG_LOGDB)) > 0) ? true : false;
$cfg['debug']['logfile']  = (($qry['debugmode'] & pow(2, _DBG_LOGFILE)) > 0) ? true : false;
$cfg['debug']['query']    = (($qry['debugmode'] & pow(2, _DBG_QUERY)) > 0) ? true : false;
?>

Chroder — Sun, 14 Mar 2004 01:45:05 +0000

I just found it weird that you're comparing a programming technique to PHP's OOP development, 'tis all

Now that mySQL's license has be changed, I don't really care about SQLite.

Either way, once PHP5 is out of the RC's I'll be buying a nice O'Reilly book on it

Andrew16 — Sun, 14 Mar 2004 01:40:35 +0000

No, you don't get it lol. PHP5 is developing into more of an OO type of language (IMO). I'm saying if PHP5 really isn't focusing on 'updating' those focuses then I'm not really going to take time to go into the deeply. Such as XML support, it's been completely redone. Therefore I'm taking the proper time to learn the changes to become fully adapted to it. Oh, and who can forget SQLite?

Chroder — Sun, 14 Mar 2004 01:34:08 +0000

I don't get it... PHP5 doesn't "rely" on anything =/ You can turn just about anything into an object, permission systems or not.

Andrew16 — Sun, 14 Mar 2004 01:17:31 +0000

If PHP5 really doesn't rely on it then I probably won't work it that much. I am really concentrating on trying to work around OO coding. (*Although xBB is probably the farthest thing from, but that's how they wanted it.*)

I've been working on a PHP5 strict discussion board system. A guy by the name of 0zone is developing his version of smartBB (new PHP5) and it's pretty clean and uses OOP a lot. I've been learning a lot off of that.

<?php
        public function __construct () {
            # Work out the load time:
            $this->time_start = gettimeofday();
            $this->time = time();
            
            # Set error handeling:
            ini_set('error_reporting', E_ALL);
            #set_error_handler(array($this, 'error_report'));
?>

^^ Just a pretty looking example.

Chroder — Sun, 14 Mar 2004 01:09:22 +0000

There's not going to be anything new added to the way PHP handles the bitwise operators, so I doubt PHP5 and OOP will have a great effect on this type of permission scheme. I first got the idea from vB3, it seems to be working great there

Andrew16 — Sun, 14 Mar 2004 01:06:25 +0000

That does make sense, though. I may or may not check it out. I've been orthodically making my own coding religion (Possible?) and holding tight to it. I'll look at what you said up there some more and consider looking it to it. I'm not really sure, but do you know how much that will come into play with PHP5 and the better OO format?

Chroder — Sun, 14 Mar 2004 01:02:50 +0000

You could do that, but your creating extra columns to work with. Say you had 15 different permissions, creating a new column for each permission will create 15 more bytes per user (as well as looking ugly in phpMyAdmin ). Now you combine the permissions into one 4 byte INT() column, you've saved yourself 11 bytes per user.

I've been doing it the way you're saying for a while now, I've just decided to test out this "new way" and see how it works It's neat