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<?php $data=array('a','b','c'); $data=array_map(function($e) {return "btn-$e";},$data);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hDpVj
function name:  (null)
number of ops:  8
compiled vars:  !0 = $data
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        INIT_FCALL                                               'array_map'
          2        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FhDpVj%3A4%240'
          3        SEND_VAL                                                 ~2
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $3      
          6        ASSIGN                                                   !0, $3
          7      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FhDpVj%3A4%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hDpVj
function name:  {closure}
number of ops:  5
compiled vars:  !0 = $e
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
          0  E >   RECV                                             !0      
          1        NOP                                                      
          2        FAST_CONCAT                                      ~1      'btn-', !0
          3      > RETURN                                                   ~1
          4*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FhDpVj%3A4%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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