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<?php #ini_set('pcre.jit', 0); print_r(ini_get_all('pcre')); $regex = '@^(<([a-z_-]{3,})\s*([0-9]*)\s*([|](?:<[^<>]*>|[^>])*?)?\s*/?>)\s*(<\/a>)?@isS'; $image = '<img15340|description=123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123>'; $a = preg_match($regex, $image, $b); //var_dump($a); var_dump($b); var_dump(preg_last_error());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/k4bgd
function name:  (null)
number of ops:  23
compiled vars:  !0 = $regex, !1 = $image, !2 = $a, !3 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'print_r'
          1        INIT_FCALL                                               'ini_get_all'
          2        SEND_VAL                                                 'pcre'
          3        DO_ICALL                                         $4      
          4        SEND_VAR                                                 $4
          5        DO_ICALL                                                 
    5     6        ASSIGN                                                   !0, '%40%5E%28%3C%28%5Ba-z_-%5D%7B3%2C%7D%29%5Cs%2A%28%5B0-9%5D%2A%29%5Cs%2A%28%5B%7C%5D%28%3F%3A%3C%5B%5E%3C%3E%5D%2A%3E%7C%5B%5E%3E%5D%29%2A%3F%29%3F%5Cs%2A%2F%3F%3E%29%5Cs%2A%28%3C%5C%2Fa%3E%29%3F%40isS'
    7     7        ASSIGN                                                   !1, '%3Cimg15340%7Cdescription%3D123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123456789+123%3E'
    9     8        INIT_FCALL                                               'preg_match'
          9        SEND_VAR                                                 !0
         10        SEND_VAR                                                 !1
         11        SEND_REF                                                 !3
         12        DO_ICALL                                         $8      
         13        ASSIGN                                                   !2, $8
   12    14        INIT_FCALL                                               'var_dump'
         15        SEND_VAR                                                 !3
         16        DO_ICALL                                                 
   13    17        INIT_FCALL                                               'var_dump'
         18        INIT_FCALL                                               'preg_last_error'
         19        DO_ICALL                                         $11     
         20        SEND_VAR                                                 $11
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0

preferences:
147.48 ms | 1400 KiB | 23 Q