is there an automatic-global setting?

[miahmiah900]

i want to change a list of variables passed to a function through an array that holds their names - do i have to somehow declare all of these variables global, or is there a simple "make everything global in this function" setting?

 

[vbkris]

why not pass the pointer to the original variables to the function???

Known is handfull, Unknown is worldfull

 

[miahmiah900]

sorry, i dont know what you mean? this seems a really basic question, and i feel silly for asking it

 

[skiflyer]

Let me illustrate.

function refExample($a, &$b) {

  $a = "hello";
  $b = "world";

  echo &quot;$a $b<br>&quot;;
}

$greeting = &quot;goodbye&quot;;
$recipient= &quot;mike&quot;;

echo $greeting.' '.$recipient.'<br>';
refExample($greeting, $recipient);
echo $greeting.' '.$recipient.'<br>';


If a function receives a variable as &$var instead of $var, it will work on the memory address of the variable, instead of a copy of the variable... in other words, it will work in the scope of the caller instead of the callee.

-Rob

 

[DRJ478]

What you should read is "passing per reference".

http://www.php.net/manual/en/language.references.pass.php

 

[miahmiah900]

i am not at home right now so i cant paste my code, but i was having problems because i passed the names of the variables to the function in an array, and then referenced the variables by using an eval statement to build the actual code.