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<?php $password = "Heslo"; $matches = array(); var_dump(preg_match_all('/[A-Z]/', $password, $matches));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2F8mg
function name:  (null)
number of ops:  11
compiled vars:  !0 = $password, !1 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'Heslo'
    4     1        ASSIGN                                                   !1, <array>
    5     2        INIT_FCALL                                               'var_dump'
          3        INIT_FCALL                                               'preg_match_all'
          4        SEND_VAL                                                 '%2F%5BA-Z%5D%2F'
          5        SEND_VAR                                                 !0
          6        SEND_REF                                                 !1
          7        DO_ICALL                                         $4      
          8        SEND_VAR                                                 $4
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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