Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.php > #6720

Re: Globalizing vars in class methods doesnt seem to work, var disappears after global, var is inaccessible in other methods/funcs

Show all headers | View raw

Am 03.08.2012 19:45, schrieb J. Frank Parnell:
> <?php
> class test{
> 	function __construct(){
> 		$this->makevar();
> 		global $var;
> 		 echo '<hr>__const(): '.$var;		
> 	}
> 	function makevar(){
> 		$var = 'something';
> 		 echo '<hr>just declared in makevar(): '.$var;
> 		 global $var;
> 		 echo '<hr>after global in makevar(): '.$var;
> 	}	
> }//class
> 
> $t = new test;
> echo '<hr>outside class: '.$var;
> global $var;
> echo '<hr>outside class after global: '.$var;
> 
> ?>
> this outputs:
> just declared in makevar(): something
> after global in makevar(): [nothing]
> __const():[nothing]
> outside class: [nothing]
> outside class after global:  [nothing]
> 
> 
> So, 1, why does global $var in the makevar() make it null?
> and B, why dont I have any access to $var in the __constructor or outside the class?
> 

Your code is nonsense, you have to declare a variable as global _before_ using it.

> In the real script, $var will be an instance of a different class that I want to use all over the place. 
>  

Have a look at the singleton pattern.

/Str.

Back to comp.lang.php | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Globalizing vars in class methods doesnt seem to work, var disappears after global, var is inaccessible in other methods/funcs "J. Frank Parnell" <juglesh@gmail.com> - 2012-08-03 10:45 -0700
  Re: Globalizing vars in class methods doesnt seem to work, var disappears   after global, var is inaccessible in other methods/funcs "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-08-04 19:18 +0200
  Re: Globalizing vars in class methods doesnt seem to work, var disappears after global, var is inaccessible in other methods/funcs Jerry Stuckle <jstucklex@attglobal.net> - 2012-08-04 14:24 -0400
    Re: Globalizing vars in class methods doesnt seem to work, var disappears after global, var is inaccessible in other methods/funcs Jerry Stuckle <jstucklex@attglobal.net> - 2012-08-04 14:45 -0400
      Re: Globalizing vars in class methods doesnt seem to work, var disappears after global, var is inaccessible in other methods/funcs "J. Frank Parnell" <juglesh@gmail.com> - 2012-08-04 21:08 -0700
        Re: Globalizing vars in class methods doesnt seem to work, var   disappears after global, var is inaccessible in other methods/funcs "J.O. Aho" <user@example.net> - 2012-08-05 08:28 +0200

csiph-web