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<?php // 空 XML を bool にキャストすると false $falsy = new SimpleXMLElement('<bool></bool>'); var_dump((bool)$falsy);// false // 中身のある XML を bool にキャストすると true $truthy = new SimpleXMLElement('<bool><true/></bool>'); var_dump((bool)$truthy);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2TOTI
function name:  (null)
number of ops:  17
compiled vars:  !0 = $falsy, !1 = $truthy
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E >   NEW                                                  $2      'SimpleXMLElement'
          1        SEND_VAL_EX                                                  '%3Cbool%3E%3C%2Fbool%3E'
          2        DO_FCALL                                          0          
          3        ASSIGN                                                       !0, $2
    5     4        INIT_FCALL                                                   'var_dump'
          5        BOOL                                                 ~5      !0
          6        SEND_VAL                                                     ~5
          7        DO_ICALL                                                     
    8     8        NEW                                                  $7      'SimpleXMLElement'
          9        SEND_VAL_EX                                                  '%3Cbool%3E%3Ctrue%2F%3E%3C%2Fbool%3E'
         10        DO_FCALL                                          0          
         11        ASSIGN                                                       !1, $7
    9    12        INIT_FCALL                                                   'var_dump'
         13        BOOL                                                 ~10     !1
         14        SEND_VAL                                                     ~10
         15        DO_ICALL                                                     
         16      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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