如何编写类似于$ _GET的函数？

Is there a function that works like $_GET ? I mean a function that transforms

"?var1=5&var2=true"

to

$var1=5; 
$var2="true";

So that I can use one variable (string) in a function and fetch many variables from it?

Like:

function manual_GET($args){ /* ? */}

function myFunction($args)
{
manual_GET($args);
 if(isset($var1))/* doesn't have to be this way, btw */
 {
   do_something($var1);
 }
 //etc
}

p.s. : I don't want to use $_GET with URL because this file is a class file (namely database_library.php) so I don't execute it directly, or make an AJAX call. I just require_once(); it.

Yes, there is. It is called parse_str: http://php.net/manual/en/function.parse-str.php

One way to fix it.

function myFunction($args){
 return parse_str($args,$values);
}

function parseQueryString($str) { 
  $op = array(); 
  $pairs = explode("&", $str); 
  foreach ($pairs as $pair) { 
    list($k, $v) = array_map("urldecode", explode("=", $pair)); 
    $op[$k] = $v; 
  } 
 return $op; 

}

it works like parse_str but doesn't convert spaces and dots to underscores

"?var1=5&var2=true"

foreach ($_GET AS $k=>$v){
     $$k=$v;
}

echo $var1; // print 5
echo $var2; // print true