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<?php $t = function(callable $func) { return $func(); }; $s = function() { echo 'E'; }; $t($s);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qAX7O
function name:  (null)
number of ops:  8
compiled vars:  !0 = $t, !1 = $s
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FqAX7O0x7fb1877d503b'
   5     1        ASSIGN                                                   !0, ~2
   7     2        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FqAX7O0x7fb1877d505f'
   9     3        ASSIGN                                                   !1, ~4
  11     4        INIT_DYNAMIC_CALL                                        !0
         5        SEND_VAR_EX                                              !1
         6        DO_FCALL                                      0          
         7      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FqAX7O0x7fb1877d503b:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qAX7O
function name:  {closure}
number of ops:  5
compiled vars:  !0 = $func
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   RECV                                             !0      
   4     1        INIT_DYNAMIC_CALL                                        !0
         2        DO_FCALL                                      0  $1      
         3      > RETURN                                                   $1
   5     4*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FqAX7O0x7fb1877d503b

Function %00%7Bclosure%7D%2Fin%2FqAX7O0x7fb1877d505f:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qAX7O
function name:  {closure}
number of ops:  2
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   8     0  E >   ECHO                                                     'E'
   9     1      > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FqAX7O0x7fb1877d505f

Generated using Vulcan Logic Dumper, using php 7.2.0