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<?php $map = [ 'sys_a_1' => 'sys_b_1', 'sys_a_2' => 'sys_b_2', ]; $data = [ 'sys_a_1' => 'data_1', 'sys_a_2' => 'data_2', ]; $result = array_combine($map,$data); print_r($result);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/C2HDV
function name:  (null)
number of ops:  11
compiled vars:  !0 = $map, !1 = $data, !2 = $result
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    7     1        ASSIGN                                                   !1, <array>
   12     2        INIT_FCALL                                               'array_combine'
          3        SEND_VAR                                                 !0
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                         $5      
          6        ASSIGN                                                   !2, $5
   13     7        INIT_FCALL                                               'print_r'
          8        SEND_VAR                                                 !2
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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