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<?php $s = 'group1 name=Elisa group2 name=John group3 name=Blah'; $r = ''; preg_match_all('~(group\d) (?:name=(\w*))~',$s,$matches,PREG_SET_ORDER); var_dump($matches); echo "----------DEFAULT------\n"; preg_match_all('~(group\d) (?:name=(\w*))~',$s,$matches); var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/oiqF0
function name:  (null)
number of ops:  21
compiled vars:  !0 = $s, !1 = $r, !2 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'group1+name%3DElisa+group2+name%3DJohn+group3+name%3DBlah'
    4     1        ASSIGN                                                   !1, ''
    8     2        INIT_FCALL                                               'preg_match_all'
          3        SEND_VAL                                                 '%7E%28group%5Cd%29+%28%3F%3Aname%3D%28%5Cw%2A%29%29%7E'
          4        SEND_VAR                                                 !0
          5        SEND_REF                                                 !2
          6        SEND_VAL                                                 2
          7        DO_ICALL                                                 
    9     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !2
         10        DO_ICALL                                                 
   11    11        ECHO                                                     '----------DEFAULT------%0A'
   12    12        INIT_FCALL                                               'preg_match_all'
         13        SEND_VAL                                                 '%7E%28group%5Cd%29+%28%3F%3Aname%3D%28%5Cw%2A%29%29%7E'
         14        SEND_VAR                                                 !0
         15        SEND_REF                                                 !2
         16        DO_ICALL                                                 
   13    17        INIT_FCALL                                               'var_dump'
         18        SEND_VAR                                                 !2
         19        DO_ICALL                                                 
         20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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