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<?php $input = array( array( 'username' => 'matt' ) ); print_r ($input); print_r( array_map(function ($entry) { return $entry['username']; }, $input));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7i2ll
function name:  (null)
number of ops:  13
compiled vars:  !0 = $input
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    7     1        INIT_FCALL                                               'print_r'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    8     4        INIT_FCALL                                               'print_r'
          5        INIT_FCALL                                               'array_map'
          6        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2F7i2ll%3A8%240'
   10     7        SEND_VAL                                                 ~3
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                         $4      
         10        SEND_VAR                                                 $4
         11        DO_ICALL                                                 
         12      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2F7i2ll%3A8%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7i2ll
function name:  {closure}
number of ops:  4
compiled vars:  !0 = $entry
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   RECV                                             !0      
    9     1        FETCH_DIM_R                                      ~1      !0, 'username'
          2      > RETURN                                                   ~1
   10     3*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2F7i2ll%3A8%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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