Description:
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Add function get_var_dump() to relieve the inconveniences associated with var_dump() automatically outputting.

Reproduce code:
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//for expected result
$getDump = get_var_dump($_GET);
mail("to@me.com", "GET dump from domain@domain.com", $getDump);
header("content-type:{$_GET['type']}");

//for actual result
var_dump($_GET);
header("content-type:{$_GET['type']}");

//can be emulated with, but cumbersome, and not always enabled on remote hosts
ob_start();
var_dump($_GET);
$getDump = ob_get_contents();
ob_end_clean();
mail("to@me.com", "GET dump from domain@domain.com", $getDump);
header("content-type:{$_GET['type']}");

Expected result:
----------------
1) No error.
2) Ability to send / manipulate (convert to json for ajax apps) var dump data outside of php

Actual result:
--------------
1) Header fails
2) var_dump must be seen as processed by tester and cannot be collected in a beta environment.