3v4l.org

run code in 500+ PHP versions simultaneously
<?php $fn = create_function( '$x', 'return $x; } $foo = 42; function foo($int) { return $int; ' ); echo foo($fn($foo));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/jU3UU
function name:  (null)
number of ops:  13
compiled vars:  !0 = $fn, !1 = $foo
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL_BY_NAME                                           'create_function'
    3     1        SEND_VAL_EX                                                  '%24x'
    4     2        SEND_VAL_EX                                                  'return+%24x%3B+%7D+%24foo+%3D+42%3B+function+foo%28%24int%29+%7B+return+%24int%3B+'
    2     3        DO_FCALL                                          0  $2      
          4        ASSIGN                                                       !0, $2
    7     5        INIT_FCALL_BY_NAME                                           'foo'
          6        INIT_DYNAMIC_CALL                                            !0
          7        SEND_VAR_EX                                                  !1
          8        DO_FCALL                                          0  $4      
          9        SEND_VAR_NO_REF_EX                                           $4
         10        DO_FCALL                                          0  $5      
         11        ECHO                                                         $5
         12      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
177.2 ms | 3058 KiB | 13 Q