3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo $a ?: 'foo';
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BFQQN
function name:  (null)
number of ops:  4
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   JMP_SET                                          ~1      !0, ->2
          1        QM_ASSIGN                                        ~1      'foo'
          2        ECHO                                                     ~1
          3      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
156.75 ms | 1392 KiB | 13 Q