foreach w/ variable variables || constants // for $_SESSION

igorek

// $_SESSION Super Global variables
if (isset($_SESSION)) {
  // run em as their own Constant variables
  foreach($_SESSION as $key => $value) {
    define("$key","$value",true);
    // or if preferred as variables
    // $$key = $value;
  }
}

dagon

extract is another option

igorek

dagon;10950416 wrote:
extract is another option

trow me an example just for fun.

although the "symbol table" is an interesting point, I just would like to view your extract(); of my $_SESSION Variable in action.

Sincerely,

[iia]

// I have tried the upcoming =DDD
// but unfortunately I got a 404 and I am in no mood to play w.apache atm
<?php
$x =  array('username'=>'iia','status'=>'admin');
$r = extract($x);
print_r($r);

// part I don't get w.out testing/debuggin -- Returns the number of variables successfully imported into the symbol table. 
?>

halojoy

Your code is good, igorek

As you have used the 3rd argument = true
we can use Capital Letters constants
USER_ID
USER_NAME
Not only the $_SESSION array can be used like that.
Any other array will work the same.

One little issue is, if the array key is numeric: 0,1,2 etc
Then can not a CONSTANT be created.
But this is no big thing for $_SESSION, as the keys almost never are numeric (NUM)

igorek

halojoy;10950425 wrote:
Your code is good, igorek

As you have used the 3rd argument = true
we can use Capital Letters constants
USER_ID
USER_NAME
Not only the $_SESSION array can be used like that.
Any other array will work the same.

One little issue is, if the array key is numeric: 0,1,2 etc
Then can not a CONSTANT be created.
But this is no big thing for $_SESSION, as the keys almost never are numeric (NUM)

The way I figure is to build my/your/else table in db, hopefully you will not name your column names in table as digits/numeric , by such statement I mean that how would you refer to them in your mind while developing "CREATE TABLE users (id int auto_increment, 1 varchar(23)); WTF is 1????

I mean hopefully if you no crazy notepad on side of laptop/pc rewritting in pen your defs of columns in table for security... This shall work asap easy and then you can Just state "echo/print ( "Welcome, Firstname Lastname! Date:" . date);

As for the 'true' in define(); function it makes alot of sense since I code in lowercase...

Any Upper case or camel hump makes me mad unfortunately.

At the same time for someone who scripts with how they call it freely either 'iia' or 'iIa' or 'IIa' same constant will be taken place instead so it give you a little room if you a bit sloppy with your ish.

dagon

igorek;10950424 wrote:
trow me an example just for fun.

click on the link provided to the manual "just for fun"

igorek

dagon;10950430 wrote:
click on the link provided to the manual "just for fun"

i did, lol for some reason apache gave me a 404, unfortunately these are probably worthless posts i mean IF we are speaking type up your own example from mine using the extract();

JFF! 🙂

Why check the manual if I can get a working example of the same on a forum, I mean a the manual is great an all but after all day sitting on behind a monitor you would like some communication or trade or experience with someone who has more experience than you.

What I mean is ... extract(); function is a great suggetion but how would you use it in my situation. If you are having fun or enjoyment from this.

bradgrafelman

igorek wrote:
trow me an example just for fun.

As dagon said, look at the manual for [man]extract/man. Although it doesn't create constants (only variables), I think extract() would be better than your foreach() loop since it allows prefixing (to avoid variable name collisions).

I also don't know why you'd ever want to extract the elements of the $SESSION array into constants. If the data is truly constant, why not put it in a config file? And if it's not, why not just keep it in the $SESSION array where it (apparently) belongs, since the array itself is already a superglobal?

igorek wrote:
The way I figure is to build my/your/else table in db, hopefully you will not name your column names in table as digits/numeric

You said nothing about a database in your first post (actually, you didn't say anything at all in your first post - you just posted a snippet of code with no explanation 🙂), so how were we to assume you would only use the above code when session data comes from a database?

EDIT:

igorek wrote:
What I mean is ... extract(); function is a great suggetion but how would you use it in my situation.

I'd change this:

// $_SESSION Super Global variables 
if (isset($_SESSION)) { 
  // run em as their own Constant variables 
  foreach($_SESSION as $key => $value) { 
    define("$key","$value",true); 
    // or if preferred as variables 
    // $$key = $value; 
  } 
}

to this:

extract($_SESSION);

or, even better,

extract($_SESSION, EXTR_PREFIX_ALL, 'cfg_');

where 'cfg' assumes this is some sort of configuration data (just as an example) and may be substituted with some other short prefix that fits the description of the variables you're creating.