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<?php function buildDynamicClass($parent, $child) { $reflection = new ReflectionClass($child); if($reflection->isAbstract()) { $abstract = 'abstract'; } else { $abstract = ''; } eval($abstract.' class '.$parent.' extends '.$child.' { }'); } function buildDynamicClass2($parent, $child) { class_alias($child, $parent); } class A { } $start = microtime(TRUE); for($i=0;$i<10000;$i++) { buildDynamicClass('A', 'B'.$i); } echo 'buildDynamicClass: '.(microtime(TRUE)-$start); $start = microtime(TRUE); for($i=0;$i<10000;$i++) { buildDynamicClass2('A', 'B'.$i); } echo 'buildDynamicClass2: '.(microtime(TRUE)-$start);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 12
Branch analysis from position: 12
2 jumps found. (Code = 44) Position 1 = 14, Position 2 = 6
Branch analysis from position: 14
1 jumps found. (Code = 42) Position 1 = 32
Branch analysis from position: 32
2 jumps found. (Code = 44) Position 1 = 34, Position 2 = 26
Branch analysis from position: 34
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 26
2 jumps found. (Code = 44) Position 1 = 34, Position 2 = 26
Branch analysis from position: 34
Branch analysis from position: 26
Branch analysis from position: 6
2 jumps found. (Code = 44) Position 1 = 14, Position 2 = 6
Branch analysis from position: 14
Branch analysis from position: 6
filename:       /in/e142L
function name:  (null)
number of ops:  41
compiled vars:  !0 = $start, !1 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   25     0  E >   INIT_FCALL                                               'microtime'
          1        SEND_VAL                                                 <true>
          2        DO_ICALL                                         $2      
          3        ASSIGN                                                   !0, $2
   26     4        ASSIGN                                                   !1, 0
          5      > JMP                                                      ->12
   27     6    >   INIT_FCALL                                               'builddynamicclass'
          7        SEND_VAL                                                 'A'
          8        CONCAT                                           ~5      'B', !1
          9        SEND_VAL                                                 ~5
         10        DO_FCALL                                      0          
   26    11        PRE_INC                                                  !1
         12    >   IS_SMALLER                                               !1, 10000
         13      > JMPNZ                                                    ~8, ->6
   29    14    >   INIT_FCALL                                               'microtime'
         15        SEND_VAL                                                 <true>
         16        DO_ICALL                                         $9      
         17        SUB                                              ~10     $9, !0
         18        CONCAT                                           ~11     'buildDynamicClass%3A+', ~10
         19        ECHO                                                     ~11
   31    20        INIT_FCALL                                               'microtime'
         21        SEND_VAL                                                 <true>
         22        DO_ICALL                                         $12     
         23        ASSIGN                                                   !0, $12
   32    24        ASSIGN                                                   !1, 0
         25      > JMP                                                      ->32
   33    26    >   INIT_FCALL                                               'builddynamicclass2'
         27        SEND_VAL                                                 'A'
         28        CONCAT                                           ~15     'B', !1
         29        SEND_VAL                                                 ~15
         30        DO_FCALL                                      0          
   32    31        PRE_INC                                                  !1
         32    >   IS_SMALLER                                               !1, 10000
         33      > JMPNZ                                                    ~18, ->26
   35    34    >   INIT_FCALL                                               'microtime'
         35        SEND_VAL                                                 <true>
         36        DO_ICALL                                         $19     
         37        SUB                                              ~20     $19, !0
         38        CONCAT                                           ~21     'buildDynamicClass2%3A+', ~20
         39        ECHO                                                     ~21
         40      > RETURN                                                   1

Function builddynamicclass:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 11
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 12
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 11
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/e142L
function name:  buildDynamicClass
number of ops:  19
compiled vars:  !0 = $parent, !1 = $child, !2 = $reflection, !3 = $abstract
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    5     2        NEW                                              $4      'ReflectionClass'
          3        SEND_VAR_EX                                              !1
          4        DO_FCALL                                      0          
          5        ASSIGN                                                   !2, $4
    6     6        INIT_METHOD_CALL                                         !2, 'isAbstract'
          7        DO_FCALL                                      0  $7      
          8      > JMPZ                                                     $7, ->11
    7     9    >   ASSIGN                                                   !3, 'abstract'
         10      > JMP                                                      ->12
    9    11    >   ASSIGN                                                   !3, ''
   12    12    >   CONCAT                                           ~10     !3, '+class+'
         13        CONCAT                                           ~11     ~10, !0
         14        CONCAT                                           ~12     ~11, '+extends+'
         15        CONCAT                                           ~13     ~12, !1
         16        CONCAT                                           ~14     ~13, '+%7B+%7D'
         17        INCLUDE_OR_EVAL                                          ~14, EVAL
   14    18      > RETURN                                                   null

End of function builddynamicclass

Function builddynamicclass2:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/e142L
function name:  buildDynamicClass2
number of ops:  7
compiled vars:  !0 = $parent, !1 = $child
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   16     0  E >   RECV                                             !0      
          1        RECV                                             !1      
   18     2        INIT_FCALL                                               'class_alias'
          3        SEND_VAR                                                 !1
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                                 
   20     6      > RETURN                                                   null

End of function builddynamicclass2

Class A: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


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