3v4l.org

run code in 300+ PHP versions simultaneously
<?php $f = 'strlen'; $s = 'hello'; print $f($s);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/GpVDE
function name:  (null)
number of ops:  7
compiled vars:  !0 = $f, !1 = $s
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'strlen'
    5     1        ASSIGN                                                   !1, 'hello'
    7     2        INIT_DYNAMIC_CALL                                        !0
          3        SEND_VAR_EX                                              !1
          4        DO_FCALL                                      0  $4      
          5        ECHO                                                     $4
          6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
179.99 ms | 1392 KiB | 13 Q