3v4l.org

run code in 300+ PHP versions simultaneously
<?php if(isset($xxx)) { echo "isset<br>"; echo var_dump($xxx); } else { echo "notset<br>"; echo var_dump($xxx); } ?>
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 2, Position 2 = 8
Branch analysis from position: 2
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MT1l3
function name:  (null)
number of ops:  14
compiled vars:  !0 = $xxx
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ISSET_ISEMPTY_CV                                         !0
          1      > JMPZ                                                     ~1, ->8
    3     2    >   ECHO                                                     'isset%3Cbr%3E'
    4     3        INIT_FCALL                                               'var_dump'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        ECHO                                                     $2
          7      > JMP                                                      ->13
    7     8    >   ECHO                                                     'notset%3Cbr%3E'
    8     9        INIT_FCALL                                               'var_dump'
         10        SEND_VAR                                                 !0
         11        DO_ICALL                                         $3      
         12        ECHO                                                     $3
   10    13    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.53 ms | 1385 KiB | 15 Q