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<?php $test_array = array("first_key" => "first_value", "second_key" => "second_value"); array_walk($test_array, function(&$a, $b) { $a = "$b loves $a"; }); var_dump($test_array);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dU5CX
function name:  (null)
number of ops:  10
compiled vars:  !0 = $test_array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'array_walk'
          2        SEND_REF                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FdU5CX%3A5%240'
          4        SEND_VAL                                                 ~2
          5        DO_ICALL                                                 
    6     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FdU5CX%3A5%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dU5CX
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        ROPE_INIT                                     3  ~3      !1
          3        ROPE_ADD                                      1  ~3      ~3, '+loves+'
          4        ROPE_END                                      2  ~2      ~3, !0
          5        ASSIGN                                                   !0, ~2
          6      > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FdU5CX%3A5%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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