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<?php var_dump(empty('')); var_dump(empty('0')); var_dump(empty([])); var_dump(empty(null)); var_dump(empty(false)); var_dump(empty(0)); var_dump(empty(+0)); var_dump(empty(-0)); var_dump(empty(0.0)); var_dump(empty(0.00)); var_dump(empty(-0.0)); $xml = <<<XML <?xml version='1.0' standalone='yes'?> <a></a> XML; var_dump(empty(new SimpleXMLElement($xml))); echo "\n-------\n"; // false $stdClass = (object)[]; var_dump(empty($stdClass), $stdClass); var_dump(empty(NAN)); var_dump(empty([[]])); var_dump(empty('-0')); var_dump(empty('0.0')); var_dump(empty(' ')); // 半角スペース
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FPuOD
function name:  (null)
number of ops:  65
compiled vars:  !0 = $xml, !1 = $stdClass
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        SEND_VAL                                                 <true>
          2        DO_ICALL                                                 
    4     3        INIT_FCALL                                               'var_dump'
          4        SEND_VAL                                                 <true>
          5        DO_ICALL                                                 
    5     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAL                                                 <true>
          8        DO_ICALL                                                 
    6     9        INIT_FCALL                                               'var_dump'
         10        SEND_VAL                                                 <true>
         11        DO_ICALL                                                 
    7    12        INIT_FCALL                                               'var_dump'
         13        SEND_VAL                                                 <true>
         14        DO_ICALL                                                 
    8    15        INIT_FCALL                                               'var_dump'
         16        SEND_VAL                                                 <true>
         17        DO_ICALL                                                 
    9    18        INIT_FCALL                                               'var_dump'
         19        SEND_VAL                                                 <true>
         20        DO_ICALL                                                 
   10    21        INIT_FCALL                                               'var_dump'
         22        SEND_VAL                                                 <true>
         23        DO_ICALL                                                 
   11    24        INIT_FCALL                                               'var_dump'
         25        SEND_VAL                                                 <true>
         26        DO_ICALL                                                 
   12    27        INIT_FCALL                                               'var_dump'
         28        SEND_VAL                                                 <true>
         29        DO_ICALL                                                 
   13    30        INIT_FCALL                                               'var_dump'
         31        SEND_VAL                                                 <true>
         32        DO_ICALL                                                 
   14    33        ASSIGN                                                   !0, '%3C%3Fxml+version%3D%271.0%27+standalone%3D%27yes%27%3F%3E%0A%3Ca%3E%3C%2Fa%3E'
   18    34        INIT_FCALL                                               'var_dump'
         35        NEW                                              $14     'SimpleXMLElement'
         36        SEND_VAR_EX                                              !0
         37        DO_FCALL                                      0          
         38        BOOL_NOT                                         ~16     $14
         39        SEND_VAL                                                 ~16
         40        DO_ICALL                                                 
   20    41        ECHO                                                     '%0A-------%0A'
   23    42        CAST                                          8  ~18     <array>
         43        ASSIGN                                                   !1, ~18
   24    44        INIT_FCALL                                               'var_dump'
         45        ISSET_ISEMPTY_CV                                 ~20     !1
         46        SEND_VAL                                                 ~20
         47        SEND_VAR                                                 !1
         48        DO_ICALL                                                 
   25    49        INIT_FCALL                                               'var_dump'
         50        SEND_VAL                                                 <false>
         51        DO_ICALL                                                 
   26    52        INIT_FCALL                                               'var_dump'
         53        SEND_VAL                                                 <false>
         54        DO_ICALL                                                 
   27    55        INIT_FCALL                                               'var_dump'
         56        SEND_VAL                                                 <false>
         57        DO_ICALL                                                 
   28    58        INIT_FCALL                                               'var_dump'
         59        SEND_VAL                                                 <false>
         60        DO_ICALL                                                 
   29    61        INIT_FCALL                                               'var_dump'
         62        SEND_VAL                                                 <false>
         63        DO_ICALL                                                 
         64      > RETURN                                                   1

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