3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "start",PHP_EOL; echo "before loop",PHP_EOL; while (false): echo "inside loop, never executes",PHP_EOL; endwhile; echo "after loop",PHP_EOL; echo "before default",PHP_EOL; defaul: echo "after default",PHP_EOL;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
2 jumps found. (Code = 44) Position 1 = 8, Position 2 = 5
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
2 jumps found. (Code = 44) Position 1 = 8, Position 2 = 5
Branch analysis from position: 8
Branch analysis from position: 5
filename:       /in/DF6eu
function name:  (null)
number of ops:  15
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ECHO                                                     'start'
          1        ECHO                                                     '%0A'
    6     2        ECHO                                                     'before+loop'
          3        ECHO                                                     '%0A'
    7     4      > JMP                                                      ->7
    8     5    >   ECHO                                                     'inside+loop%2C+never+executes'
          6        ECHO                                                     '%0A'
    7     7    > > JMPNZ                                                    <false>, ->5
   10     8    >   ECHO                                                     'after+loop'
          9        ECHO                                                     '%0A'
   12    10        ECHO                                                     'before+default'
         11        ECHO                                                     '%0A'
   14    12        ECHO                                                     'after+default'
         13        ECHO                                                     '%0A'
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
158.33 ms | 1393 KiB | 13 Q