<?php array (
'file_test_replace' => 1,
'file_subdir' => '',
'extensions' => 'foo',
'is_image_file' => '1',
'op' => 'Submit',
'form_build_id' => 'form-J3AlG8Q27WF2Ui151kPmaXvlkKhxMKyYkqdumjo_K48',
'form_token' => 'gjPm1DZ53JCRicebVuqih9AFu9doDADlLC_IL-ygk-s',
'form_id' => '_file_test_form',
)