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<?php // investigating closures in closures $f = function() { static $p = 'p'; return static function() { return static::$p; }; }; $g = static function() { static $p = 'p'; return static function() { return static::$p; }; }; $n = $f(); $m = $g(); var_dump( $n());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bBPf7
function name:  (null)
number of ops:  16
compiled vars:  !0 = $f, !1 = $g, !2 = $n, !3 = $m
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FbBPf7%3A3%240'
          1        ASSIGN                                                   !0, ~4
   11     2        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FbBPf7%3A11%242'
          3        ASSIGN                                                   !1, ~6
   18     4        INIT_DYNAMIC_CALL                                        !0
          5        DO_FCALL                                      0  $8      
          6        ASSIGN                                                   !2, $8
   19     7        INIT_DYNAMIC_CALL                                        !1
          8        DO_FCALL                                      0  $10     
          9        ASSIGN                                                   !3, $10
   20    10        INIT_FCALL                                               'var_dump'
         11        INIT_DYNAMIC_CALL                                        !2
         12        DO_FCALL                                      0  $12     
         13        SEND_VAR                                                 $12
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FbBPf7%3A3%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bBPf7
function name:  {closure}
number of ops:  4
compiled vars:  !0 = $p
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   BIND_STATIC                                              !0
    5     1        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FbBPf7%3A5%241'
    7     2      > RETURN                                                   ~1
    8     3*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FbBPf7%3A3%240

Function %00%7Bclosure%7D%2Fin%2FbBPf7%3A5%241:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bBPf7
function name:  {closure}
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   FETCH_STATIC_PROP_R          unknown             ~0      'p'
          1      > RETURN                                                   ~0
    7     2*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FbBPf7%3A5%241

Function %00%7Bclosure%7D%2Fin%2FbBPf7%3A11%242:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bBPf7
function name:  {closure}
number of ops:  4
compiled vars:  !0 = $p
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   BIND_STATIC                                              !0
   13     1        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FbBPf7%3A13%243'
   15     2      > RETURN                                                   ~1
   16     3*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FbBPf7%3A11%242

Function %00%7Bclosure%7D%2Fin%2FbBPf7%3A13%243:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bBPf7
function name:  {closure}
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   14     0  E >   FETCH_STATIC_PROP_R          unknown             ~0      'p'
          1      > RETURN                                                   ~0
   15     2*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FbBPf7%3A13%243

Generated using Vulcan Logic Dumper, using php 8.0.0


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