3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(is_a('Iterator', 'Traversable', true)); var_dump(is_a('Traversable', 'Traversable', true)); var_dump(is_a('Traversable', 'Iterator', true));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9A7sP
function name:  (null)
number of ops:  25
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'is_a'
          2        SEND_VAL                                                 'Iterator'
          3        SEND_VAL                                                 'Traversable'
          4        SEND_VAL                                                 <true>
          5        DO_ICALL                                         $0      
          6        SEND_VAR                                                 $0
          7        DO_ICALL                                                 
    5     8        INIT_FCALL                                               'var_dump'
          9        INIT_FCALL                                               'is_a'
         10        SEND_VAL                                                 'Traversable'
         11        SEND_VAL                                                 'Traversable'
         12        SEND_VAL                                                 <true>
         13        DO_ICALL                                         $2      
         14        SEND_VAR                                                 $2
         15        DO_ICALL                                                 
    7    16        INIT_FCALL                                               'var_dump'
         17        INIT_FCALL                                               'is_a'
         18        SEND_VAL                                                 'Traversable'
         19        SEND_VAL                                                 'Iterator'
         20        SEND_VAL                                                 <true>
         21        DO_ICALL                                         $4      
         22        SEND_VAR                                                 $4
         23        DO_ICALL                                                 
         24      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
145.36 ms | 1395 KiB | 17 Q