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<?php $number = '+421 917 982 116'; echo number_format((int)$number, 0, ' ', ' ');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ldfSQ
function name:  (null)
number of ops:  10
compiled vars:  !0 = $number
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%2B421+917+982+116'
    5     1        INIT_FCALL                                               'number_format'
          2        CAST                                          4  ~2      !0
          3        SEND_VAL                                                 ~2
          4        SEND_VAL                                                 0
          5        SEND_VAL                                                 '+'
          6        SEND_VAL                                                 '+'
          7        DO_ICALL                                         $3      
          8        ECHO                                                     $3
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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