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<?php echo preg_split("/[ ,]+/", '21, 151, 555');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Wv6QX
function name:  (null)
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'preg_split'
          1        SEND_VAL                                                 '%2F%5B+%2C%5D%2B%2F'
          2        SEND_VAL                                                 '21%2C+151%2C+555'
          3        DO_ICALL                                         $0      
          4        ECHO                                                     $0
          5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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