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<?php $arr = [1,2,3]; var_dump(memory_get_usage()); foreach ($arr as $k => $v) { var_dump(memory_get_usage()); if (!isset($arr[$k])) { var_dump(memory_get_usage()); } }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 7, Position 2 = 23
Branch analysis from position: 7
2 jumps found. (Code = 78) Position 1 = 8, Position 2 = 23
Branch analysis from position: 8
2 jumps found. (Code = 43) Position 1 = 17, Position 2 = 22
Branch analysis from position: 17
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
Branch analysis from position: 22
Branch analysis from position: 23
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 23
filename:       /in/mSTHE
function name:  (null)
number of ops:  25
compiled vars:  !0 = $arr, !1 = $v, !2 = $k
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'memory_get_usage'
          3        DO_ICALL                                         $4      
          4        SEND_VAR                                                 $4
          5        DO_ICALL                                                 
    7     6      > FE_RESET_R                                       $6      !0, ->23
          7    > > FE_FETCH_R                                       ~7      $6, !1, ->23
          8    >   ASSIGN                                                   !2, ~7
    9     9        INIT_FCALL                                               'var_dump'
         10        INIT_FCALL                                               'memory_get_usage'
         11        DO_ICALL                                         $9      
         12        SEND_VAR                                                 $9
         13        DO_ICALL                                                 
   11    14        ISSET_ISEMPTY_DIM_OBJ                         0  ~11     !0, !2
         15        BOOL_NOT                                         ~12     ~11
         16      > JMPZ                                                     ~12, ->22
   12    17    >   INIT_FCALL                                               'var_dump'
         18        INIT_FCALL                                               'memory_get_usage'
         19        DO_ICALL                                         $13     
         20        SEND_VAR                                                 $13
         21        DO_ICALL                                                 
    7    22    > > JMP                                                      ->7
         23    >   FE_FREE                                                  $6
   14    24      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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148.21 ms | 1395 KiB | 17 Q