3v4l.org

run code in 500+ PHP versions simultaneously
<?php class A {} $a = 'A'; $object = new A; var_dump(is_a('A', 'A')); var_dump(is_a($object, 'A')); var_dump($object instanceof $a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hn1Ao
function name:  (null)
number of ops:  24
compiled vars:  !0 = $a, !1 = $object
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    5     0  E >   ASSIGN                                                       !0, 'A'
    6     1        NEW                                                  $3      'A'
          2        DO_FCALL                                          0          
          3        ASSIGN                                                       !1, $3
    7     4        INIT_FCALL                                                   'var_dump'
          5        INIT_FCALL                                                   'is_a'
          6        SEND_VAL                                                     'A'
          7        SEND_VAL                                                     'A'
          8        DO_ICALL                                             $6      
          9        SEND_VAR                                                     $6
         10        DO_ICALL                                                     
    8    11        INIT_FCALL                                                   'var_dump'
         12        INIT_FCALL                                                   'is_a'
         13        SEND_VAR                                                     !1
         14        SEND_VAL                                                     'A'
         15        DO_ICALL                                             $8      
         16        SEND_VAR                                                     $8
         17        DO_ICALL                                                     
    9    18        INIT_FCALL                                                   'var_dump'
         19        FETCH_CLASS                                       0  $10     !0
         20        INSTANCEOF                                           ~11     !1, $10
         21        SEND_VAL                                                     ~11
         22        DO_ICALL                                                     
         23      > RETURN                                                       1

Class A: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
209.85 ms | 2229 KiB | 15 Q