Analysis _php skills of word filtration principle in ucenter

This paper analyzes the principle of word filtration in ucenter. Share to everyone for your reference, specific as follows:

Filter words table:

Id	Admin	Find	Replacement	FindPattern
1	Ucenteradminist	Access	Big	/Visit/is
2	Ucenteradminist	4655	45	/4655/is
3	Ucenteradminist	Fdsaf	Dfsa	/fdsaf/is
4	Ucenteradminist	Have a chance	In	/have the opportunity to/is

To build cache data:

Private
function _get_badwords () {
  $data = $this->db->fetch_all ("select * from"). Uc_dbtablepre. " Badwords ");
  $return = Array ();
  if (Is_array ($data)) {
    foreach ($data as $k => $v) {
      $return [' FindPattern '] [$k] = $v [' FindPattern '];
      $return [' Replace '] [$k] = $v [' Replacement ']
    ;
  }
  return $return;
}

Call Method:

$_cache[' badwords ' = $this->base->cache (' badwords ');
if ($_cache[' badwords '] [' FindPattern ']) {
  $subject = @preg_replace ($_cache[' badwords '] [' FindPattern '], $_cache [' Badwords '] [' Replace '], $subject);
  $message = @preg_replace ($_cache[' badwords '] [' FindPattern '], $_cache[' badwords ' [' Replace '], $message);
}

Each parameter (except the limit) of the preg_replace () can be an array. If both pattern and replacement are arrays, they are processed in the order in which their key names appear in the array. This is not necessarily the same as the numeric order of the index. If you use an index to identify which pattern will be replaced by which replacement, you should sort the array by Ksort () before calling Preg_replace ().

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I hope this article will help you with the PHP program design.