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<?php $string = "A8"; if(preg_match("/[a-z][A-Z]/",$string)!==false) { echo "gots a letter"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 8
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
filename:       /in/AA7C5
function name:  (null)
number of ops:  9
compiled vars:  !0 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'A8'
    4     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%5Ba-z%5D%5BA-Z%5D%2F'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5        TYPE_CHECK                                  1018          $2
          6      > JMPZ                                                     ~3, ->8
    5     7    >   ECHO                                                     'gots+a+letter'
    6     8    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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