3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '1'; $f = function() use ($a) { var_dump($a); return $a .= '-'; }; echo $f(); echo $f();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/87lRO
function name:  (null)
number of ops:  11
compiled vars:  !0 = $a, !1 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '1'
    4     1        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2F87lRO%3A4%240'
          2        BIND_LEXICAL                                             ~3, !0
          3        ASSIGN                                                   !1, ~3
    8     4        INIT_DYNAMIC_CALL                                        !1
          5        DO_FCALL                                      0  $5      
          6        ECHO                                                     $5
    9     7        INIT_DYNAMIC_CALL                                        !1
          8        DO_FCALL                                      0  $6      
          9        ECHO                                                     $6
         10      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2F87lRO%3A4%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/87lRO
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   BIND_STATIC                                              !0
    5     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    6     4        ASSIGN_OP                                     8  ~2      !0, '-'
          5      > RETURN                                                   ~2
    7     6*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2F87lRO%3A4%240

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
180.21 ms | 1395 KiB | 15 Q