Description:
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When there are more checkboxes within form, which share same control name, it is impossible to get all checked values after form is submitted. The problem holds over regardless what method is used. Normally I'd expect array of values in $_REQUEST superglobal variable instead of single basic value. To be honest I've found the problem in PHP Version 4.3.3 and didn't check if it exists in later versions.

Reproduce code:
---------------
<?php //this is file example.php
  print_r($_REQUEST['records']);
?>

<form method="get" action="example.php">
  <input type="checkbox" name="records" value="A" checked>
  <input type="checkbox" name="records" value="B" checked>
  <input type="submit">
</form>


Expected result:
----------------
Array ( [1] => A [2] => B)

Actual result:
--------------
B