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<?php foreach(range(0,10000) as $i) { $a = null; } // 3.847 ms for($i = 0; $i < 10000; ++$i) { $b = null; } // 0.663 ms
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 5, Position 2 = 8
Branch analysis from position: 5
2 jumps found. (Code = 78) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 11
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 11
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 11
Branch analysis from position: 15
Branch analysis from position: 11
Branch analysis from position: 8
filename:       /in/MHWnj
function name:  (null)
number of ops:  16
compiled vars:  !0 = $i, !1 = $a, !2 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'range'
          1        SEND_VAL                                                 0
          2        SEND_VAL                                                 10000
          3        DO_ICALL                                         $3      
          4      > FE_RESET_R                                       $4      $3, ->8
          5    > > FE_FETCH_R                                               $4, !0, ->8
          6    >   ASSIGN                                                   !1, null
          7      > JMP                                                      ->5
          8    >   FE_FREE                                                  $4
    3     9        ASSIGN                                                   !0, 0
         10      > JMP                                                      ->13
         11    >   ASSIGN                                                   !2, null
         12        PRE_INC                                                  !0
         13    >   IS_SMALLER                                               !0, 10000
         14      > JMPNZ                                                    ~9, ->11
         15    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
166.51 ms | 1395 KiB | 15 Q