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<?php $a = [1,2,3,4,5,6,7,8,9]; foreach ($a as $key => &$value) { if ($key === 4) { unset($a[$key]); var_dump(key($a)); break; } } var_dump(key($a));
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 125) Position 1 = 2, Position 2 = 15
Branch analysis from position: 2
2 jumps found. (Code = 126) Position 1 = 3, Position 2 = 15
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 14
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 15
Branch analysis from position: 15
filename:       /in/M3iTU
function name:  (null)
number of ops:  23
compiled vars:  !0 = $a, !1 = $value, !2 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1      > FE_RESET_RW                                      $4      !0, ->15
          2    > > FE_FETCH_RW                                      ~5      $4, !1, ->15
          3    >   ASSIGN                                                   !2, ~5
    6     4        IS_IDENTICAL                                             !2, 4
          5      > JMPZ                                                     ~7, ->14
    7     6    >   UNSET_DIM                                                !0, !2
    8     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'key'
          9        SEND_VAR                                                 !0
         10        DO_ICALL                                         $8      
         11        SEND_VAR                                                 $8
         12        DO_ICALL                                                 
    9    13      > JMP                                                      ->15
    5    14    > > JMP                                                      ->2
         15    >   FE_FREE                                                  $4
   13    16        INIT_FCALL                                               'var_dump'
         17        INIT_FCALL                                               'key'
         18        SEND_VAR                                                 !0
         19        DO_ICALL                                         $10     
         20        SEND_VAR                                                 $10
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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