001- string(4) "DATA"
001+ 
002- string(46) "~!@#$%^&*()_QWERTYUIOPASDFGHJKLZXCVBNM<>>?"}{:"
003- string(0) ""
004- 
005- Warning: filter_var(): First argument is expected to be a valid callback in %s on line %d
006- NULL
007- 
008- Warning: filter_var(): First argument is expected to be a valid callback in %s on line %d
009- NULL
010- 
011- Warning: filter_var(): First argument is expected to be a valid callback in %s on line %d
012- NULL
013- string(4) "data"
014- string(46) "~!@#$%^&*()_qwertyuiopasdfghjklzxcvbnm<>>?"}{:"
015- string(0) ""
016- NULL
017- NULL
018- NULL
019- NULL
020- NULL
021- NULL
022- NULL
023- NULL
024- NULL
025- int(1)
026- string(4) "test"
027- Done