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<?php $m = memory_get_usage(); for ($i = 0; $i < 1000; $i++) { //$fn = eval('return function ($foo) {};'); $fn = function ($foo) {}; var_dump(memory_get_usage() - $m); }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
2 jumps found. (Code = 44) Position 1 = 16, Position 2 = 5
Branch analysis from position: 16
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
2 jumps found. (Code = 44) Position 1 = 16, Position 2 = 5
Branch analysis from position: 16
Branch analysis from position: 5
filename:       /in/1DeC6
function name:  (null)
number of ops:  17
compiled vars:  !0 = $m, !1 = $i, !2 = $fn
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'memory_get_usage'
          1        DO_ICALL                                         $3      
          2        ASSIGN                                                   !0, $3
    4     3        ASSIGN                                                   !1, 0
          4      > JMP                                                      ->14
    6     5    >   DECLARE_LAMBDA_FUNCTION                          ~6      [0]
          6        ASSIGN                                                   !2, ~6
    7     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'memory_get_usage'
          9        DO_ICALL                                         $8      
         10        SUB                                              ~9      $8, !0
         11        SEND_VAL                                                 ~9
         12        DO_ICALL                                                 
    4    13        PRE_INC                                                  !1
         14    >   IS_SMALLER                                               !1, 1000
         15      > JMPNZ                                                    ~12, ->5
    8    16    > > 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/1DeC6
function name:  {closure}
number of ops:  2
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.0.0


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136.57 ms | 999 KiB | 15 Q