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<?php $array = array(); for($i=0;$i<6000;$i++) { $val = md5($i); $array[$val] = $val; } $time = microtime(true); for($i=0;$i<6000;$i++) { array_key_exists($array['toto']); } echo 'array_key_exists: '.($time-microtime(true)); $time = microtime(true); for($i=0;$i<6000;$i++) { isset($array['toto']); } echo 'isset: '.($time-microtime(true));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
2 jumps found. (Code = 44) Position 1 = 12, Position 2 = 3
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 23
Branch analysis from position: 23
2 jumps found. (Code = 44) Position 1 = 25, Position 2 = 18
Branch analysis from position: 25
1 jumps found. (Code = 42) Position 1 = 40
Branch analysis from position: 40
2 jumps found. (Code = 44) Position 1 = 42, Position 2 = 37
Branch analysis from position: 42
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 37
2 jumps found. (Code = 44) Position 1 = 42, Position 2 = 37
Branch analysis from position: 42
Branch analysis from position: 37
Branch analysis from position: 18
2 jumps found. (Code = 44) Position 1 = 25, Position 2 = 18
Branch analysis from position: 25
Branch analysis from position: 18
Branch analysis from position: 3
2 jumps found. (Code = 44) Position 1 = 12, Position 2 = 3
Branch analysis from position: 12
Branch analysis from position: 3
filename:       /in/mQ46L
function name:  (null)
number of ops:  49
compiled vars:  !0 = $array, !1 = $i, !2 = $val, !3 = $time
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        ASSIGN                                                   !1, 0
          2      > JMP                                                      ->10
    4     3    >   INIT_FCALL                                               'md5'
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                         $6      
          6        ASSIGN                                                   !2, $6
    5     7        ASSIGN_DIM                                               !0, !2
          8        OP_DATA                                                  !2
    3     9        PRE_INC                                                  !1
         10    >   IS_SMALLER                                               !1, 6000
         11      > JMPNZ                                                    ~10, ->3
    8    12    >   INIT_FCALL                                               'microtime'
         13        SEND_VAL                                                 <true>
         14        DO_ICALL                                         $11     
         15        ASSIGN                                                   !3, $11
    9    16        ASSIGN                                                   !1, 0
         17      > JMP                                                      ->23
   10    18    >   INIT_FCALL                                               'array_key_exists'
         19        FETCH_DIM_R                                      ~14     !0, 'toto'
         20        SEND_VAL                                                 ~14
         21        DO_ICALL                                                 
    9    22        PRE_INC                                                  !1
         23    >   IS_SMALLER                                               !1, 6000
         24      > JMPNZ                                                    ~17, ->18
   12    25    >   INIT_FCALL                                               'microtime'
         26        SEND_VAL                                                 <true>
         27        DO_ICALL                                         $18     
         28        SUB                                              ~19     !3, $18
         29        CONCAT                                           ~20     'array_key_exists%3A+', ~19
         30        ECHO                                                     ~20
   15    31        INIT_FCALL                                               'microtime'
         32        SEND_VAL                                                 <true>
         33        DO_ICALL                                         $21     
         34        ASSIGN                                                   !3, $21
   16    35        ASSIGN                                                   !1, 0
         36      > JMP                                                      ->40
   17    37    >   ISSET_ISEMPTY_DIM_OBJ                         0  ~24     !0, 'toto'
         38        FREE                                                     ~24
   16    39        PRE_INC                                                  !1
         40    >   IS_SMALLER                                               !1, 6000
         41      > JMPNZ                                                    ~26, ->37
   19    42    >   INIT_FCALL                                               'microtime'
         43        SEND_VAL                                                 <true>
         44        DO_ICALL                                         $27     
         45        SUB                                              ~28     !3, $27
         46        CONCAT                                           ~29     'isset%3A+', ~28
         47        ECHO                                                     ~29
         48      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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204.63 ms | 1400 KiB | 19 Q