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<?php $usernameCheck = 'd:ani'; var_dump(true === (bool)preg_match('/[^a-z_\-0-9]/i', $usernameCheck));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/kCJCS
function name:  (null)
number of ops:  11
compiled vars:  !0 = $usernameCheck
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'd%3Aani'
    4     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'preg_match'
          3        SEND_VAL                                                 '%2F%5B%5Ea-z_%5C-0-9%5D%2Fi'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        BOOL                                             ~3      $2
          7        TYPE_CHECK                                    8  ~4      ~3
          8        SEND_VAL                                                 ~4
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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