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<?php // empty.txtは0バイトのファイル $fp = fopen("empty.txt", "r"); var_dump( feof($fp), fgets($fp), feof($fp) ); fclose($fp); $file = new SplFileObject("empty.txt", "r"); var_dump( $file->eof(), $file->fgets(), $file->eof() );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/34Y9C
function name:  (null)
number of ops:  39
compiled vars:  !0 = $fp, !1 = $file
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   INIT_FCALL                                               'fopen'
          1        SEND_VAL                                                 'empty.txt'
          2        SEND_VAL                                                 'r'
          3        DO_ICALL                                         $2      
          4        ASSIGN                                                   !0, $2
    6     5        INIT_FCALL                                               'var_dump'
    7     6        INIT_FCALL                                               'feof'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                         $4      
          9        SEND_VAR                                                 $4
    8    10        INIT_FCALL                                               'fgets'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                         $5      
         13        SEND_VAR                                                 $5
    9    14        INIT_FCALL                                               'feof'
         15        SEND_VAR                                                 !0
         16        DO_ICALL                                         $6      
         17        SEND_VAR                                                 $6
         18        DO_ICALL                                                 
   11    19        INIT_FCALL                                               'fclose'
         20        SEND_VAR                                                 !0
         21        DO_ICALL                                                 
   13    22        NEW                                              $9      'SplFileObject'
         23        SEND_VAL_EX                                              'empty.txt'
         24        SEND_VAL_EX                                              'r'
         25        DO_FCALL                                      0          
         26        ASSIGN                                                   !1, $9
   14    27        INIT_FCALL                                               'var_dump'
   15    28        INIT_METHOD_CALL                                         !1, 'eof'
         29        DO_FCALL                                      0  $12     
         30        SEND_VAR                                                 $12
   16    31        INIT_METHOD_CALL                                         !1, 'fgets'
         32        DO_FCALL                                      0  $13     
         33        SEND_VAR                                                 $13
   17    34        INIT_METHOD_CALL                                         !1, 'eof'
         35        DO_FCALL                                      0  $14     
         36        SEND_VAR                                                 $14
         37        DO_ICALL                                                 
   18    38      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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