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<?php $f = new SplFileObject('php://temp', 'w+'); $f->fwrite("line 1\nline 2\nline 3"); $f->rewind(); $f->next(); $f->next(); $f->next(); var_dump($f->current()); var_dump($f->key());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qM88J
function name:  (null)
number of ops:  27
compiled vars:  !0 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'SplFileObject'
          1        SEND_VAL_EX                                              'php%3A%2F%2Ftemp'
          2        SEND_VAL_EX                                              'w%2B'
          3        DO_FCALL                                      0          
          4        ASSIGN                                                   !0, $1
    4     5        INIT_METHOD_CALL                                         !0, 'fwrite'
          6        SEND_VAL_EX                                              'line+1%0Aline+2%0Aline+3'
          7        DO_FCALL                                      0          
    5     8        INIT_METHOD_CALL                                         !0, 'rewind'
          9        DO_FCALL                                      0          
    6    10        INIT_METHOD_CALL                                         !0, 'next'
         11        DO_FCALL                                      0          
    7    12        INIT_METHOD_CALL                                         !0, 'next'
         13        DO_FCALL                                      0          
    8    14        INIT_METHOD_CALL                                         !0, 'next'
         15        DO_FCALL                                      0          
    9    16        INIT_FCALL                                               'var_dump'
         17        INIT_METHOD_CALL                                         !0, 'current'
         18        DO_FCALL                                      0  $9      
         19        SEND_VAR                                                 $9
         20        DO_ICALL                                                 
   10    21        INIT_FCALL                                               'var_dump'
         22        INIT_METHOD_CALL                                         !0, 'key'
         23        DO_FCALL                                      0  $11     
         24        SEND_VAR                                                 $11
         25        DO_ICALL                                                 
         26      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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