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<?php $a = range(3,9); foreach ($a as $b) { switch($b) { case 3: $b = 7; case 7: $b = 3; default: // do nothing } } echo implode('-',$a); $a = range(3,9); foreach ($a as &$b) { switch($b) { case 3: $b = 7; case 7: $b = 3; default: // do nothing } } echo implode('-',$a); // Excerpt From: Lorna Mitchell. “Zend Certification Preparation Pack.” iBooks.
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 6, Position 2 = 15
Branch analysis from position: 6
2 jumps found. (Code = 78) Position 1 = 7, Position 2 = 15
Branch analysis from position: 7
2 jumps found. (Code = 44) Position 1 = 9, Position 2 = 12
Branch analysis from position: 9
2 jumps found. (Code = 44) Position 1 = 11, Position 2 = 13
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
Branch analysis from position: 13
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
Branch analysis from position: 15
2 jumps found. (Code = 125) Position 1 = 27, Position 2 = 36
Branch analysis from position: 27
2 jumps found. (Code = 126) Position 1 = 28, Position 2 = 36
Branch analysis from position: 28
2 jumps found. (Code = 44) Position 1 = 30, Position 2 = 33
Branch analysis from position: 30
2 jumps found. (Code = 44) Position 1 = 32, Position 2 = 34
Branch analysis from position: 32
1 jumps found. (Code = 42) Position 1 = 35
Branch analysis from position: 35
1 jumps found. (Code = 42) Position 1 = 27
Branch analysis from position: 27
Branch analysis from position: 34
1 jumps found. (Code = 42) Position 1 = 27
Branch analysis from position: 27
Branch analysis from position: 33
1 jumps found. (Code = 42) Position 1 = 27
Branch analysis from position: 27
Branch analysis from position: 36
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 36
Branch analysis from position: 15
filename:       /in/IQKtM
function name:  (null)
number of ops:  43
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'range'
          1        SEND_VAL                                                 3
          2        SEND_VAL                                                 9
          3        DO_ICALL                                         $2      
          4        ASSIGN                                                   !0, $2
    4     5      > FE_RESET_R                                       $4      !0, ->15
          6    > > FE_FETCH_R                                               $4, !1, ->15
    6     7    >   IS_EQUAL                                                 !1, 3
          8      > JMPNZ                                                    ~5, ->12
    8     9    >   IS_EQUAL                                                 !1, 7
         10      > JMPNZ                                                    ~5, ->13
         11    > > JMP                                                      ->14
    7    12    >   ASSIGN                                                   !1, 7
    9    13    >   ASSIGN                                                   !1, 3
    4    14    > > JMP                                                      ->6
         15    >   FE_FREE                                                  $4
   14    16        INIT_FCALL                                               'implode'
         17        SEND_VAL                                                 '-'
         18        SEND_VAR                                                 !0
         19        DO_ICALL                                         $8      
         20        ECHO                                                     $8
   16    21        INIT_FCALL                                               'range'
         22        SEND_VAL                                                 3
         23        SEND_VAL                                                 9
         24        DO_ICALL                                         $9      
         25        ASSIGN                                                   !0, $9
   17    26      > FE_RESET_RW                                      $11     !0, ->36
         27    > > FE_FETCH_RW                                              $11, !1, ->36
   19    28    >   IS_EQUAL                                                 !1, 3
         29      > JMPNZ                                                    ~12, ->33
   21    30    >   IS_EQUAL                                                 !1, 7
         31      > JMPNZ                                                    ~12, ->34
         32    > > JMP                                                      ->35
   20    33    >   ASSIGN                                                   !1, 7
   22    34    >   ASSIGN                                                   !1, 3
   17    35    > > JMP                                                      ->27
         36    >   FE_FREE                                                  $11
   27    37        INIT_FCALL                                               'implode'
         38        SEND_VAL                                                 '-'
         39        SEND_VAR                                                 !0
         40        DO_ICALL                                         $15     
         41        ECHO                                                     $15
   29    42      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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