3v4l.org

run code in 500+ PHP versions simultaneously
<?php $sentence = "foo_foo_foo foo-foo_foo"; if (preg_match_all("/(?<![^\W_])foo(?![^\W_])/i", $sentence, $matches)) { print_r($matches[0]); } echo PHP_EOL . preg_replace("/(?<![^\W_])foo(?![^\W_])/i", "YES", $sentence);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 11
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 11
filename:       /in/HjiTv
function name:  (null)
number of ops:  16
compiled vars:  !0 = $sentence, !1 = $matches
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 'foo_foo_foo+foo-foo_foo'
    4     1        INIT_FCALL                                                   'preg_match_all'
          2        SEND_VAL                                                     '%2F%28%3F%3C%21%5B%5E%5CW_%5D%29foo%28%3F%21%5B%5E%5CW_%5D%29%2Fi'
          3        SEND_VAR                                                     !0
          4        SEND_REF                                                     !1
          5        DO_ICALL                                             $3      
          6      > JMPZ                                                         $3, ->11
    5     7    >   INIT_FCALL                                                   'print_r'
          8        FETCH_DIM_R                                          ~4      !1, 0
          9        SEND_VAL                                                     ~4
         10        DO_ICALL                                                     
    7    11    >   FRAMELESS_ICALL_3                preg_replace        ~6      '%2F%28%3F%3C%21%5B%5E%5CW_%5D%29foo%28%3F%21%5B%5E%5CW_%5D%29%2Fi', 'YES'
         12        OP_DATA                                                      !0
         13        CONCAT                                               ~7      '%0A', ~6
         14        ECHO                                                         ~7
         15      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
163.7 ms | 2010 KiB | 15 Q