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<?php $factor = 10; // pre PHP 7.4 $nums = array_map(function($n) use ($factor) { return $n * $factor; }, [1,2,3,4]); var_dump($nums); // PHP 7.4 $nums = array_map(fn($n) => $n * $factor, [1, 2, 3, 4]); var_dump($nums);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TvZV0
function name:  (null)
number of ops:  22
compiled vars:  !0 = $factor, !1 = $nums
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 10
    6     1        INIT_FCALL                                                   'array_map'
          2        DECLARE_LAMBDA_FUNCTION                              ~3      [0]
          3        BIND_LEXICAL                                                 ~3, !0
    8     4        SEND_VAL                                                     ~3
          5        SEND_VAL                                                     <array>
    6     6        DO_ICALL                                             $4      
          7        ASSIGN                                                       !1, $4
    9     8        INIT_FCALL                                                   'var_dump'
          9        SEND_VAR                                                     !1
         10        DO_ICALL                                                     
   12    11        INIT_FCALL                                                   'array_map'
         12        DECLARE_LAMBDA_FUNCTION                              ~7      [1]
         13        BIND_LEXICAL                                                 ~7, !0
         14        SEND_VAL                                                     ~7
         15        SEND_VAL                                                     <array>
         16        DO_ICALL                                             $8      
         17        ASSIGN                                                       !1, $8
   14    18        INIT_FCALL                                                   'var_dump'
         19        SEND_VAR                                                     !1
         20        DO_ICALL                                                     
         21      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TvZV0
function name:  {closure:/in/TvZV0:6}
number of ops:  5
compiled vars:  !0 = $n, !1 = $factor
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    6     0  E >   RECV                                                 !0      
          1        BIND_STATIC                                                  !1
    7     2        MUL                                                  ~2      !0, !1
          3      > RETURN                                                       ~2
    8     4*     > RETURN                                                       null

End of Dynamic Function 0

Dynamic Function 1
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TvZV0
function name:  {closure:/in/TvZV0:12}
number of ops:  5
compiled vars:  !0 = $n, !1 = $factor
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   12     0  E >   RECV                                                 !0      
          1        BIND_STATIC                                                  !1
          2        MUL                                                  ~2      !0, !1
          3      > RETURN                                                       ~2
          4*     > RETURN                                                       null

End of Dynamic Function 1

Generated using Vulcan Logic Dumper, using php 8.5.0


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