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<?php var_dump(NAN); // float NAN var_dump(NAN == NAN); // boolean true var_dump(NAN === NAN); // boolean true var_dump(is_nan(NAN)); // boolean true var_dump(NAN == 12); // boolean true var_dump(NAN === 12); // boolean false var_dump(is_nan(12)); // boolean false var_dump(NAN == 12.4); // boolean true var_dump(NAN === 12.4); // boolean true var_dump(is_nan(12.4)); // boolean false var_dump(NAN == NULL); // boolean true var_dump(NAN === NULL); // boolean false var_dump(is_nan(NULL)); // boolean false
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Rp1FB
function name:  (null)
number of ops:  52
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        SEND_VAL                                                 NAN
          2        DO_ICALL                                                 
    5     3        INIT_FCALL                                               'var_dump'
          4        SEND_VAL                                                 <false>
          5        DO_ICALL                                                 
    6     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAL                                                 <false>
          8        DO_ICALL                                                 
    7     9        INIT_FCALL                                               'var_dump'
         10        INIT_FCALL                                               'is_nan'
         11        SEND_VAL                                                 NAN
         12        DO_ICALL                                         $3      
         13        SEND_VAR                                                 $3
         14        DO_ICALL                                                 
    9    15        INIT_FCALL                                               'var_dump'
         16        SEND_VAL                                                 <false>
         17        DO_ICALL                                                 
   10    18        INIT_FCALL                                               'var_dump'
         19        SEND_VAL                                                 <false>
         20        DO_ICALL                                                 
   11    21        INIT_FCALL                                               'var_dump'
         22        INIT_FCALL                                               'is_nan'
         23        SEND_VAL                                                 12
         24        DO_ICALL                                         $7      
         25        SEND_VAR                                                 $7
         26        DO_ICALL                                                 
   13    27        INIT_FCALL                                               'var_dump'
         28        SEND_VAL                                                 <false>
         29        DO_ICALL                                                 
   14    30        INIT_FCALL                                               'var_dump'
         31        SEND_VAL                                                 <false>
         32        DO_ICALL                                                 
   15    33        INIT_FCALL                                               'var_dump'
         34        INIT_FCALL                                               'is_nan'
         35        SEND_VAL                                                 12.4
         36        DO_ICALL                                         $11     
         37        SEND_VAR                                                 $11
         38        DO_ICALL                                                 
   17    39        INIT_FCALL                                               'var_dump'
         40        SEND_VAL                                                 <false>
         41        DO_ICALL                                                 
   18    42        INIT_FCALL                                               'var_dump'
         43        SEND_VAL                                                 <false>
         44        DO_ICALL                                                 
   19    45        INIT_FCALL                                               'var_dump'
         46        INIT_FCALL                                               'is_nan'
         47        SEND_VAL                                                 null
         48        DO_ICALL                                         $15     
         49        SEND_VAR                                                 $15
         50        DO_ICALL                                                 
         51      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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