3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'round(12)'; echo preg_replace('/[^0-9\.\(\)\+\-\/\*%\^:|bcsqrt|bcpow|round|ceil|floor]/', '', $str);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7nS4O
function name:  (null)
number of ops:  8
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'round%2812%29'
    3     1        INIT_FCALL                                               'preg_replace'
          2        SEND_VAL                                                 '%2F%5B%5E0-9%5C.%5C%28%5C%29%5C%2B%5C-%5C%2F%5C%2A%25%5C%5E%3A%7Cbcsqrt%7Cbcpow%7Cround%7Cceil%7Cfloor%5D%2F'
          3        SEND_VAL                                                 ''
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        ECHO                                                     $2
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
152.97 ms | 1385 KiB | 15 Q