PHP: Rewriting switch as class - php

Question

So, I have a switch statement inside a foreach loop that checks the value of a field in the array and uses the value to build a named array and email address variable for each unique value. Question is below example code.
As an example, if the values are foo, bar, and foobar, then the following occurs:
switch($value['value']) {
case 'foo':
if(!isset($foo)){
$foo = array();
}
if(!isset($email_foo)){
$email_foo = convert_to_email($value['value']);
}
array_push($foo, $value);
break;
case 'bar':
if(!isset($bar)){
$bar = array();
}
if(!isset($email_bar)){
$email_bar = convert_to_email($value['value']);
}
array_push($bar, $value);
break;
case 'foobar':
if(!isset($foobar)){
$foobar = array();
}
if(!isset($email_foobar)){
$email_foobar = convert_to_email($value['value']);
}
array_push($foobar, $value);
break;
default:
if(!isset($default)){
$default = array();
}
if(!isset($email_default)){
$email_default = 'this#isemail.com';
}
array_push($default, $value);
}
Resulting in 4 different email addresses:
$email_foo = 'foo#isemail.com';
$email_bar = 'bar#isemail.com';
$email_foobar = 'foobar#isemail.com';
$email_default = 'default#isemail.com';
and 4 different arrays of data:
$foo = array(
0 => array(
'value' => 'F Oo',
'name' => 'Janet',
'age' => 23
),
1 => array(
'value' => 'F Oo',
'name' => 'Doug',
'age' => 42
)
)
$bar = array(
0 => array(
'value' => 'B Ar',
'name' => 'James',
'age' => 23
),
1 => array(
'value' => 'B Ar',
'name' => 'Donald',
'age' => 42
)
)
etc...
So, here is the question:
Is it possible to write a class that can be used to create all of the named arrays and email variables? Sort of something like this:
class Account_Manager_Build
{
public function __construct()
{
if(!isset($this)){
$this = array();
}
if(!isset("email_$this")){
"email_$this" = convert_to_email($this->value['value']);
}
array_push($this, $this->value);
}
}
For testing purposes, here is the function convert_to_email that is used throughout the examples:
function convert_to_email($input){
$returned = strtolower(substr($input, 0, 1)).strtolower(end(str_word_count($input, 2))).'#ismail.com';
return $returned;
}

Answer 1

Actually, you can create dynamically variables using the $$ notation:
$variable = "email_$name";
$$variable = "something";
However I'm not sure of what you're trying to do
What's the point of computing $email_something if it can be easily computed from something?
Why do you create those variables instead of just storing this in an array?