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<?php $c = 'Al(OH)3'; $n = preg_replace('/.*^OOH\)(\d)/i', '$1', $c); echo $n;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CmedY
function name:  (null)
number of ops:  9
compiled vars:  !0 = $c, !1 = $n
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'Al%28OH%293'
    5     1        INIT_FCALL                                               'preg_replace'
          2        SEND_VAL                                                 '%2F.%2A%5EOOH%5C%29%28%5Cd%29%2Fi'
          3        SEND_VAL                                                 '%241'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $3      
          6        ASSIGN                                                   !1, $3
    6     7        ECHO                                                     !1
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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