3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set('pcre.backtrack_limit', '1000000'); ini_set('pcre.recursion_limit', '1000000'); $count = 500000; $string = str_repeat("a", $count); echo preg_match('/\A( [\x09\x0A\x0D\x20-\x7E] | [\xC2-\xDF][\x80-\xBF] | \xE0[\xA0-\xBF][\x80-\xBF] | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} | \xED[\x80-\x9F][\x80-\xBF] | \xF0[\x90-\xBF][\x80-\xBF]{2} | [\xF1-\xF3][\x80-\xBF]{3} | \xF4[\x80-\x8F][\x80-\xBF]{2} )*\z/x', $string); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sqVcm
function name:  (null)
number of ops:  20
compiled vars:  !0 = $count, !1 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'ini_set'
          1        SEND_VAL                                                 'pcre.backtrack_limit'
          2        SEND_VAL                                                 '1000000'
          3        DO_ICALL                                                 
    3     4        INIT_FCALL                                               'ini_set'
          5        SEND_VAL                                                 'pcre.recursion_limit'
          6        SEND_VAL                                                 '1000000'
          7        DO_ICALL                                                 
    4     8        ASSIGN                                                   !0, 500000
    5     9        INIT_FCALL                                               'str_repeat'
         10        SEND_VAL                                                 'a'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                         $5      
         13        ASSIGN                                                   !1, $5
    6    14        INIT_FCALL                                               'preg_match'
         15        SEND_VAL                                                 '%2F%5CA%28%0A+++++++++++++%5B%5Cx09%5Cx0A%5Cx0D%5Cx20-%5Cx7E%5D%0A+++++++++++%7C+%5B%5CxC2-%5CxDF%5D%5B%5Cx80-%5CxBF%5D%0A+++++++++++%7C++%5CxE0%5B%5CxA0-%5CxBF%5D%5B%5Cx80-%5CxBF%5D%0A+++++++++++%7C+%5B%5CxE1-%5CxEC%5CxEE%5CxEF%5D%5B%5Cx80-%5CxBF%5D%7B2%7D%0A+++++++++++%7C++%5CxED%5B%5Cx80-%5Cx9F%5D%5B%5Cx80-%5CxBF%5D%0A+++++++++++%7C++%5CxF0%5B%5Cx90-%5CxBF%5D%5B%5Cx80-%5CxBF%5D%7B2%7D%0A+++++++++++%7C+%5B%5CxF1-%5CxF3%5D%5B%5Cx80-%5CxBF%5D%7B3%7D%0A+++++++++++%7C++%5CxF4%5B%5Cx80-%5Cx8F%5D%5B%5Cx80-%5CxBF%5D%7B2%7D%0A++++++++++%29%2A%5Cz%2Fx'
   15    16        SEND_VAR                                                 !1
         17        DO_ICALL                                         $7      
         18        ECHO                                                     $7
   16    19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
152.1 ms | 1387 KiB | 19 Q