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<?php $txt = '<div id="5">'; preg_match('`\s+([\w-]+)="([^"]*)"`', $txt, $match); var_dump($match); preg_match('`\s+(?P<key>[\w-]+)="(?P<value>[^"]*)"`', $txt, $match); var_dump($match); preg_match('`\s+(?<key>[\w-]+)="(?<value>[^"]*)"`', $txt, $match); var_dump($match);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/HYM0M
function name:  (null)
number of ops:  26
compiled vars:  !0 = $txt, !1 = $match
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%3Cdiv+id%3D%225%22%3E'
    3     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%60%5Cs%2B%28%5B%5Cw-%5D%2B%29%3D%22%28%5B%5E%22%5D%2A%29%22%60'
          3        SEND_VAR                                                 !0
          4        SEND_REF                                                 !1
          5        DO_ICALL                                                 
    4     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
    5     9        INIT_FCALL                                               'preg_match'
         10        SEND_VAL                                                 '%60%5Cs%2B%28%3FP%3Ckey%3E%5B%5Cw-%5D%2B%29%3D%22%28%3FP%3Cvalue%3E%5B%5E%22%5D%2A%29%22%60'
         11        SEND_VAR                                                 !0
         12        SEND_REF                                                 !1
         13        DO_ICALL                                                 
    6    14        INIT_FCALL                                               'var_dump'
         15        SEND_VAR                                                 !1
         16        DO_ICALL                                                 
    7    17        INIT_FCALL                                               'preg_match'
         18        SEND_VAL                                                 '%60%5Cs%2B%28%3F%3Ckey%3E%5B%5Cw-%5D%2B%29%3D%22%28%3F%3Cvalue%3E%5B%5E%22%5D%2A%29%22%60'
         19        SEND_VAR                                                 !0
         20        SEND_REF                                                 !1
         21        DO_ICALL                                                 
    8    22        INIT_FCALL                                               'var_dump'
         23        SEND_VAR                                                 !1
         24        DO_ICALL                                                 
         25      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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