3v4l.org

run code in 300+ PHP versions simultaneously
<?php $counter = 1; $test_callback = function () use ($counter) { $counter++; echo "inside: $counter, "; }; $counter++; $test_callback(); echo "outside: $counter";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2asX5
function name:  (null)
number of ops:  11
compiled vars:  !0 = $counter, !1 = $test_callback
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 1
    5     1        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2F2asX5%3A5%240'
          2        BIND_LEXICAL                                             ~3, !0
          3        ASSIGN                                                   !1, ~3
   10     4        PRE_INC                                                  !0
   12     5        INIT_DYNAMIC_CALL                                        !1
          6        DO_FCALL                                      0          
   13     7        NOP                                                      
          8        FAST_CONCAT                                      ~7      'outside%3A+', !0
          9        ECHO                                                     ~7
         10      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2F2asX5%3A5%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2asX5
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $counter
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   BIND_STATIC                                              !0
    6     1        PRE_INC                                                  !0
    7     2        ROPE_INIT                                     3  ~3      'inside%3A+'
          3        ROPE_ADD                                      1  ~3      ~3, !0
          4        ROPE_END                                      2  ~2      ~3, '%2C+'
          5        ECHO                                                     ~2
    8     6      > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2F2asX5%3A5%240

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
171.42 ms | 1398 KiB | 13 Q