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<?php $input_array = array("FirSt" => 1, "SecOnd" => 4); print_r(array_change_key_case($input_array, CASE_UPPER));
based on Etp7k
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/25bCr
function name:  (null)
number of ops:  9
compiled vars:  !0 = $input_array
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   ASSIGN                                                   !0, <array>
   3     1        INIT_FCALL                                               'print_r'
         2        INIT_FCALL                                               'array_change_key_case'
         3        SEND_VAR                                                 !0
         4        SEND_VAL                                                 1
         5        DO_ICALL                                         $2      
         6        SEND_VAR                                                 $2
         7        DO_ICALL                                                 
         8      > RETURN                                                   1

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