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<?php $array = array( 'foo' => 'bar', ); $timestamp = time(); for ($i=1;$i<10000;$i++) { if (array_keys($array)) {} } $timestamp = time()-$timestamp; var_dump($timestamp); for ($i=1;$i<10000;$i++) { if (!empty($array)) {} } $timestamp = time()-$timestamp; var_dump($timestamp);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 11
Branch analysis from position: 11
2 jumps found. (Code = 44) Position 1 = 13, Position 2 = 6
Branch analysis from position: 13
1 jumps found. (Code = 42) Position 1 = 26
Branch analysis from position: 26
2 jumps found. (Code = 44) Position 1 = 28, Position 2 = 22
Branch analysis from position: 28
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 22
2 jumps found. (Code = 43) Position 1 = 25, Position 2 = 25
Branch analysis from position: 25
2 jumps found. (Code = 44) Position 1 = 28, Position 2 = 22
Branch analysis from position: 28
Branch analysis from position: 22
Branch analysis from position: 25
Branch analysis from position: 6
2 jumps found. (Code = 43) Position 1 = 10, Position 2 = 10
Branch analysis from position: 10
2 jumps found. (Code = 44) Position 1 = 13, Position 2 = 6
Branch analysis from position: 13
Branch analysis from position: 6
Branch analysis from position: 10
filename:       /in/8SfUf
function name:  (null)
number of ops:  36
compiled vars:  !0 = $array, !1 = $timestamp, !2 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    6     1        INIT_FCALL                                               'time'
          2        DO_ICALL                                         $4      
          3        ASSIGN                                                   !1, $4
    8     4        ASSIGN                                                   !2, 1
          5      > JMP                                                      ->11
    9     6    >   INIT_FCALL                                               'array_keys'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                         $7      
          9      > JMPZ                                                     $7, ->10
    8    10    >   PRE_INC                                                  !2
         11    >   IS_SMALLER                                               !2, 10000
         12      > JMPNZ                                                    ~9, ->6
   12    13    >   INIT_FCALL                                               'time'
         14        DO_ICALL                                         $10     
         15        SUB                                              ~11     $10, !1
         16        ASSIGN                                                   !1, ~11
   13    17        INIT_FCALL                                               'var_dump'
         18        SEND_VAR                                                 !1
         19        DO_ICALL                                                 
   16    20        ASSIGN                                                   !2, 1
         21      > JMP                                                      ->26
   17    22    >   ISSET_ISEMPTY_CV                                 ~15     !0
         23        BOOL_NOT                                         ~16     ~15
         24      > JMPZ                                                     ~16, ->25
   16    25    >   PRE_INC                                                  !2
         26    >   IS_SMALLER                                               !2, 10000
         27      > JMPNZ                                                    ~18, ->22
   20    28    >   INIT_FCALL                                               'time'
         29        DO_ICALL                                         $19     
         30        SUB                                              ~20     $19, !1
         31        ASSIGN                                                   !1, ~20
   21    32        INIT_FCALL                                               'var_dump'
         33        SEND_VAR                                                 !1
         34        DO_ICALL                                                 
         35      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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153.42 ms | 1400 KiB | 19 Q