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<?php $number = sscanf('ABC123121234ABC', '%s%3s%2s%4s%s'); var_dump(vsprintf('%s%s-%s-%s%s', $number));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/GIWa9
function name:  (null)
number of ops:  13
compiled vars:  !0 = $number
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'sscanf'
          1        SEND_VAL                                                 'ABC123121234ABC'
          2        SEND_VAL                                                 '%25s%253s%252s%254s%25s'
          3        DO_ICALL                                         $1      
          4        ASSIGN                                                   !0, $1
    4     5        INIT_FCALL                                               'var_dump'
          6        INIT_FCALL                                               'vsprintf'
          7        SEND_VAL                                                 '%25s%25s-%25s-%25s%25s'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                         $3      
         10        SEND_VAR                                                 $3
         11        DO_ICALL                                                 
         12      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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