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<?php echo preg_match('/^(!null)$/', strtolower(gettype("blah")));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/fEOee
function name:  (null)
number of ops:  10
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'preg_match'
          1        SEND_VAL                                                 '%2F%5E%28%21null%29%24%2F'
          2        INIT_FCALL                                               'strtolower'
          3        GET_TYPE                                         ~0      'blah'
          4        SEND_VAL                                                 ~0
          5        DO_ICALL                                         $1      
          6        SEND_VAR                                                 $1
          7        DO_ICALL                                         $2      
          8        ECHO                                                     $2
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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