array_push but with key, value pairs

Hey all, I was just trying to figure out something that should be quite simple but seems to be eluding me, consider the following: $input = array(); while ( list($key, $val) = each($HTTP_POST_VARS) ) { if ( $key != "Submit" ) { array_push($input, $val); } } Ok fine, I now have an associative array with a numeric index, but hangon I wanted to push the key => value into the array. How would I do this, I have tried a couple of things but am having some really crazy results ;-) What I am really trying to do is create a new array from the HTTP_POST_VARS while excluding certain fields, like Submit or the X and Y values from a image button. Any ideas/suggestions are very welcomed, Regards Joseph,