PHP : create variable dynamically

I have one of my class method like this shown below :

public function somethin开发者_如何转开发g() {
    $this->create_varible('test');
    return $test;
}

I wanna create some variable(not class variable) by passing it's name as argument to create variable method(as shown above), then return it's value.

your help will be appreciated, thanks in advance.

---

Example:

<?php

public function create_variable($name, $value) {
  // Dynamically create the variable.
  $this->{$name} = $value;
}

Or:

<?php

$stack = 'overflow';
${$stack} = 'example';

echo $overflow;

Please keep in mind the scope of variables.

---

I don't see the point in that either. But to answer your question literally:

You can use extract for that purpose:

public function something() {
    extract($this->create_varible('test'));
    return $test;
}

public function create_varible($varname) {
    return array ($varname => 12345);
}

The ->create_varible by itself cannot create a variable in the invokers scope. That's why you need to wrap the call in extract() to get something like the desired effect; whatever its purpose.

^{(Yes, aware of the typo.)}

---

How about using PHP's Magic Methods, specifically the __get and __set methods.

class Foo
{
  public function __set($varName, $value)
  {
    $GLOBALS[$varName] = $value;
  }
  public function __get($varname)
  {
    return isset($GLOBALS[$varName]) ? $GLOBALS[$varName] : null;
  }
}

$foo = new Foo();
$foo->test = "Bar";
echo $test; // output: Bar

Demo found here: http://www.ideone.com/nluJ5

P.S. I mention this because if your use of $this->, and assume you're dealing with objects.

P.P.S. I think @Francois has the better solution, but offering another alternative.