3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $fn = function() { var_dump($a); return TRUE; }; $a = 2; call_user_func($fn);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/tjvAK
function name:  (null)
number of ops:  7
compiled vars:  !0 = $a, !1 = $fn
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 1
    4     1        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FtjvAK%3A4%240'
          2        ASSIGN                                                   !1, ~3
    8     3        ASSIGN                                                   !0, 2
    9     4        INIT_USER_CALL                                0          'call_user_func', !1
          5        DO_FCALL                                      0          
          6      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FtjvAK%3A4%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/tjvAK
function name:  {closure}
number of ops:  5
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   INIT_FCALL                                               'var_dump'
          1        SEND_VAR                                                 !0
          2        DO_ICALL                                                 
    6     3      > RETURN                                                   <true>
    7     4*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FtjvAK%3A4%240

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
146.62 ms | 1386 KiB | 15 Q