global foo $this->foo difference??

[stoppel]

hi i was wondering, whet is the difference between

A)

class blaat {

var $strFoo;

  function test() {
     $this->strFoo = "hello world";
     echo $this->strFoo;
  }

} 

and
😎

class blaat {

var $strFoo;

  function test() {
     global $strFoo;
     $strFoo = "hello world";
     echo $strFoo;
  }
}

thus the difference between $this->strFoo and global $strFoo??

[epp_b]

I think one is global, one is local. Not sure (?)

BTW, you don't need b[/b] when declaring a class.

[stoppel]

yeah oke but is there a difference in the scope??

p.s. $this-> is a pointer i believe it points to the current object.

[diego25]

Test this program with both classes and see if you see a difference:

<?
$test = new blaat();
$test->test();
print $strFoo;
?>

Diego

[stoppel]

no i can't see a difference that's why i asked this question.

[spirp]

It might be clearer when you it like this:

class Blaat {
    var $strFoo;

function test() {
     global $strFoo;
     $this->strFoo = $strFoo;
     echo "$strFoo\n";
}
}

$strFoo = "Hello World!";
$bar = new Blaat();
$bar->test();
echo $bar->strFoo ."\n";

This generates this output:

Hello World!
Hello World!

There are better ways to achieve this, without using global..

//Olle

[diego25]

no i can't see a difference that's why i asked this question.

Yes, there is a difference. When you run my code with one class, you get an undefined error; when you run the code with the other class, you get 2 'hello world' outputs. It shows you that the scopes of the variable $strFoo is different in both classes.

Diego