filtering bad words from text

Question

This function filer the email from text and return matched pattern

  function parse($text, $words)
  {
    $resultSet = array();
    foreach ($words as $word){
      $pattern = 'regex to match emails';
      preg_match_all($pattern, $text, $matches, PREG_OFFSET_CAPTURE );
      $this->pushToResultSet($matches);
    }
    return $resultSet;
  }

Similar way I want to match bad words from text and return them as $resultSet.

Here is code to filter badwords

TEST HERE

$badwords = array('shit', 'fuck'); // Here we can use all bad words from database
$text = 'Man, I shot this f*ck, sh/t! fucking fu*ker sh!t f*cking  sh\t ;)';
echo "filtered words <br>";
echo $text."<br/>";
$words = explode(' ', $text);
foreach ($words as $word)
    {
        $bad= false;
        foreach ($badwords as $badword)
            {
                if (strlen($word) >= strlen($badword))
                {
                    $wordOk = false;
                    for ($i = 0; $i < strlen($badword); $i++)
                    {   
                        if ($badword[$i] !== $word[$i] && ctype_alpha($word[$i]))
                        {
                            $wordOk = true;
                            break;
                        }
                    }
                    if (!$wordOk)
                    {
                        $bad= true;
                        break;
                    }
        }
            }   
            echo $bad ? 'beep ' : ($word . ' '); // Here $bad words can be returned and replace with *. 
    }

Which replaces badwords with beep

But I want to push matched bad words to $this->pushToResultSet() and returning as in first code of email filtering.

can I do this with my bad filtering code?

Answer 1

Roughly converting David Atchley's answer to PHP, does this work as you want it to?

$blocked = array('fuck','shit','damn','hell','ass');
$text = 'Man, I shot this f*ck, damn sh/t! fucking fu*ker sh!t f*cking  sh\t ;)';
$matched = preg_match_all("/(".implode('|', $blocked).")/i", $text, $matches);
$filter = preg_replace("/(".implode('|', $blocked).")/i", 'beep', $text);
var_dump($filter);
var_dump($matches);