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<?php $string = '2014333300023'; echo implode('-', str_split($string, 4));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Y7IgX
function name:  (null)
number of ops:  11
compiled vars:  !0 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '2014333300023'
    5     1        INIT_FCALL                                               'implode'
          2        SEND_VAL                                                 '-'
          3        INIT_FCALL                                               'str_split'
          4        SEND_VAR                                                 !0
          5        SEND_VAL                                                 4
          6        DO_ICALL                                         $2      
          7        SEND_VAR                                                 $2
          8        DO_ICALL                                         $3      
          9        ECHO                                                     $3
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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