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<?php preg_match('/^([0-9]{3})([0-9]{3})([0-9]{4})([0-9]*)$/', '8045551234', $matches); array_shift($matches); var_dump($matches); preg_match('/^([0-9]{3})([0-9]{3})([0-9]{4})([0-9]*)$/', '8045551234987', $matches); array_shift($matches); var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KZ8UM
function name:  (null)
number of ops:  23
compiled vars:  !0 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'preg_match'
          1        SEND_VAL                                                 '%2F%5E%28%5B0-9%5D%7B3%7D%29%28%5B0-9%5D%7B3%7D%29%28%5B0-9%5D%7B4%7D%29%28%5B0-9%5D%2A%29%24%2F'
          2        SEND_VAL                                                 '8045551234'
          3        SEND_REF                                                 !0
          4        DO_ICALL                                                 
    3     5        INIT_FCALL                                               'array_shift'
          6        SEND_REF                                                 !0
          7        DO_ICALL                                                 
    5     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !0
         10        DO_ICALL                                                 
    7    11        INIT_FCALL                                               'preg_match'
         12        SEND_VAL                                                 '%2F%5E%28%5B0-9%5D%7B3%7D%29%28%5B0-9%5D%7B3%7D%29%28%5B0-9%5D%7B4%7D%29%28%5B0-9%5D%2A%29%24%2F'
         13        SEND_VAL                                                 '8045551234987'
         14        SEND_REF                                                 !0
         15        DO_ICALL                                                 
    8    16        INIT_FCALL                                               'array_shift'
         17        SEND_REF                                                 !0
         18        DO_ICALL                                                 
    9    19        INIT_FCALL                                               'var_dump'
         20        SEND_VAR                                                 !0
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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177.68 ms | 1395 KiB | 19 Q