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<?php var_dump(preg_match('{.[{}]{{}}.*}', 'foo42[ba]rl[]olZ+]qwZ]ry{{{}}df}gh', $m), $m);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rJpZr
function name:  (null)
number of ops:  10
compiled vars:  !0 = $m
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%7B.%5B%7B%7D%5D%7B%7B%7D%7D.%2A%7D'
          3        SEND_VAL                                                 'foo42%5Bba%5Drl%5B%5DolZ%2B%5DqwZ%5Dry%7B%7B%7B%7D%7Ddf%7Dgh'
          4        SEND_REF                                                 !0
          5        DO_ICALL                                         $1      
          6        SEND_VAR                                                 $1
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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