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<?php var_dump(preg_match('#<(link)(\s[^>]*|)>#i', '<link>', $matches));var_dump($matches); var_dump(preg_match('#<(link)(\s[^>]*|)>#i', '<link/>', $matches));var_dump($matches); var_dump(preg_match('#<(link)(\s[^>]*|)>#i', '<link rel=test>', $matches));var_dump($matches); var_dump(preg_match('#<(link)(\s[^>]*)?>#i', '<link>', $matches));var_dump($matches); var_dump(preg_match('#<(link)(\s[^>]*)?>#i', '<link/>', $matches));var_dump($matches); var_dump(preg_match('#<(link)(\s[^>]*)?>#i', '<link rel=test>', $matches));var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/GApZ9
function name:  (null)
number of ops:  67
compiled vars:  !0 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%23%3C%28link%29%28%5Cs%5B%5E%3E%5D%2A%7C%29%3E%23i'
          3        SEND_VAL                                                 '%3Clink%3E'
          4        SEND_REF                                                 !0
          5        DO_ICALL                                         $1      
          6        SEND_VAR                                                 $1
          7        DO_ICALL                                                 
          8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !0
         10        DO_ICALL                                                 
    4    11        INIT_FCALL                                               'var_dump'
         12        INIT_FCALL                                               'preg_match'
         13        SEND_VAL                                                 '%23%3C%28link%29%28%5Cs%5B%5E%3E%5D%2A%7C%29%3E%23i'
         14        SEND_VAL                                                 '%3Clink%2F%3E'
         15        SEND_REF                                                 !0
         16        DO_ICALL                                         $4      
         17        SEND_VAR                                                 $4
         18        DO_ICALL                                                 
         19        INIT_FCALL                                               'var_dump'
         20        SEND_VAR                                                 !0
         21        DO_ICALL                                                 
    5    22        INIT_FCALL                                               'var_dump'
         23        INIT_FCALL                                               'preg_match'
         24        SEND_VAL                                                 '%23%3C%28link%29%28%5Cs%5B%5E%3E%5D%2A%7C%29%3E%23i'
         25        SEND_VAL                                                 '%3Clink+rel%3Dtest%3E'
         26        SEND_REF                                                 !0
         27        DO_ICALL                                         $7      
         28        SEND_VAR                                                 $7
         29        DO_ICALL                                                 
         30        INIT_FCALL                                               'var_dump'
         31        SEND_VAR                                                 !0
         32        DO_ICALL                                                 
    7    33        INIT_FCALL                                               'var_dump'
         34        INIT_FCALL                                               'preg_match'
         35        SEND_VAL                                                 '%23%3C%28link%29%28%5Cs%5B%5E%3E%5D%2A%29%3F%3E%23i'
         36        SEND_VAL                                                 '%3Clink%3E'
         37        SEND_REF                                                 !0
         38        DO_ICALL                                         $10     
         39        SEND_VAR                                                 $10
         40        DO_ICALL                                                 
         41        INIT_FCALL                                               'var_dump'
         42        SEND_VAR                                                 !0
         43        DO_ICALL                                                 
    8    44        INIT_FCALL                                               'var_dump'
         45        INIT_FCALL                                               'preg_match'
         46        SEND_VAL                                                 '%23%3C%28link%29%28%5Cs%5B%5E%3E%5D%2A%29%3F%3E%23i'
         47        SEND_VAL                                                 '%3Clink%2F%3E'
         48        SEND_REF                                                 !0
         49        DO_ICALL                                         $13     
         50        SEND_VAR                                                 $13
         51        DO_ICALL                                                 
         52        INIT_FCALL                                               'var_dump'
         53        SEND_VAR                                                 !0
         54        DO_ICALL                                                 
    9    55        INIT_FCALL                                               'var_dump'
         56        INIT_FCALL                                               'preg_match'
         57        SEND_VAL                                                 '%23%3C%28link%29%28%5Cs%5B%5E%3E%5D%2A%29%3F%3E%23i'
         58        SEND_VAL                                                 '%3Clink+rel%3Dtest%3E'
         59        SEND_REF                                                 !0
         60        DO_ICALL                                         $16     
         61        SEND_VAR                                                 $16
         62        DO_ICALL                                                 
         63        INIT_FCALL                                               'var_dump'
         64        SEND_VAR                                                 !0
         65        DO_ICALL                                                 
         66      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
162.66 ms | 1400 KiB | 17 Q