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<?php // your code goes here $ip = "40.83.109.202"; $start = microtime(true); $ipchk = !!preg_match("/^(([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]).){3}([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/", $ip); $end = microtime(true); $start2 = microtime(true); $ipchk2 = !!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4); $end2 = microtime(true); echo "preg_match:\n"; echo var_export($ipchk, true) . "\n"; echo ($end - $start) * 1000; echo "\n"; echo "filter_var:\n"; echo var_export($ipchk2, true) . "\n"; echo ($end2 - $start2) * 1000;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WncSd
function name:  (null)
number of ops:  54
compiled vars:  !0 = $ip, !1 = $start, !2 = $ipchk, !3 = $end, !4 = $start2, !5 = $ipchk2, !6 = $end2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   ASSIGN                                                   !0, '40.83.109.202'
    7     1        INIT_FCALL                                               'microtime'
          2        SEND_VAL                                                 <true>
          3        DO_ICALL                                         $8      
          4        ASSIGN                                                   !1, $8
    8     5        INIT_FCALL                                               'preg_match'
          6        SEND_VAL                                                 '%2F%5E%28%28%5B1-9%5D%3F%5B0-9%5D%7C1%5B0-9%5D%7B2%7D%7C2%5B0-4%5D%5B0-9%5D%7C25%5B0-5%5D%29.%29%7B3%7D%28%5B1-9%5D%3F%5B0-9%5D%7C1%5B0-9%5D%7B2%7D%7C2%5B0-4%5D%5B0-9%5D%7C25%5B0-5%5D%29%24%2F'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                         $10     
          9        BOOL_NOT                                         ~11     $10
         10        BOOL_NOT                                         ~12     ~11
         11        ASSIGN                                                   !2, ~12
    9    12        INIT_FCALL                                               'microtime'
         13        SEND_VAL                                                 <true>
         14        DO_ICALL                                         $14     
         15        ASSIGN                                                   !3, $14
   11    16        INIT_FCALL                                               'microtime'
         17        SEND_VAL                                                 <true>
         18        DO_ICALL                                         $16     
         19        ASSIGN                                                   !4, $16
   12    20        INIT_FCALL                                               'filter_var'
         21        SEND_VAR                                                 !0
         22        SEND_VAL                                                 275
         23        SEND_VAL                                                 1048576
         24        DO_ICALL                                         $18     
         25        BOOL_NOT                                         ~19     $18
         26        BOOL_NOT                                         ~20     ~19
         27        ASSIGN                                                   !5, ~20
   13    28        INIT_FCALL                                               'microtime'
         29        SEND_VAL                                                 <true>
         30        DO_ICALL                                         $22     
         31        ASSIGN                                                   !6, $22
   15    32        ECHO                                                     'preg_match%3A%0A'
   16    33        INIT_FCALL                                               'var_export'
         34        SEND_VAR                                                 !2
         35        SEND_VAL                                                 <true>
         36        DO_ICALL                                         $24     
         37        CONCAT                                           ~25     $24, '%0A'
         38        ECHO                                                     ~25
   17    39        SUB                                              ~26     !3, !1
         40        MUL                                              ~27     ~26, 1000
         41        ECHO                                                     ~27
   18    42        ECHO                                                     '%0A'
   19    43        ECHO                                                     'filter_var%3A%0A'
   20    44        INIT_FCALL                                               'var_export'
         45        SEND_VAR                                                 !5
         46        SEND_VAL                                                 <true>
         47        DO_ICALL                                         $28     
         48        CONCAT                                           ~29     $28, '%0A'
         49        ECHO                                                     ~29
   21    50        SUB                                              ~30     !6, !4
         51        MUL                                              ~31     ~30, 1000
         52        ECHO                                                     ~31
   22    53      > RETURN                                                   1

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