3v4l.org

run code in 300+ PHP versions simultaneously
<?php class B {} interface A {} var_dump(class_exists('B', false)); var_dump(class_exists('A', false));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/A1gIj
function name:  (null)
number of ops:  15
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'class_exists'
          2        SEND_VAL                                                 'B'
          3        SEND_VAL                                                 <false>
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
    8     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'class_exists'
          9        SEND_VAL                                                 'A'
         10        SEND_VAL                                                 <false>
         11        DO_ICALL                                         $2      
         12        SEND_VAR                                                 $2
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Class B: [no user functions]
Class A: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
152.44 ms | 1385 KiB | 17 Q