php - 在另一个函数中定义的函数内访问变量？

Question

I'm trying to get variables that I defined while in a function from another function I called in that function, example:

$thevar = 'undefined';
Blablahblah();
echo $thevar; (should echo blaaah)
function Blahedit(){

     echo $thevar; (should echo blah)
     $thevar = 'blaaah';

}
function Blablahblah(){

     global $thevar;
     $thevar = 'blah';
     Blahedit();

}

I want to know if there's another way of doing this without passing down params to Blahedit(), get_defined_vars gives me vars within the function not $thevar... and calling global $thevar will just give me the previous unedited version.

Please help ):

Answer 1

You can use this: http://php.net/manual/en/reserved.variables.globals.php

or better have a look at oop

http://php.net/manual/en/language.oop5.php http://php.net/manual/en/language.oop5.basic.php