Regex Email Replace

[$cripts]

hey i got a piece of code here that will replace a email such as username@yoursite.com to username at yoursite dot com but im having a bit of problem it is cutting of the first letter in each word so itl put out sername at oursite dot om
[code]
$email = "eric@yahoo.com";
      $email_array_search = array(
        
           '/[a-zA-Z0-9](.*?)[@](.*?)[a-zA-Z0-9-](.*?)[\.](.*?)[com|net|biz|org|tv|info](.*?)/is',
      
      );
      
      $email_array_replace = array(
      
           '$1 at $3 dot $5',
      
      );
      
      $email = preg_replace($email_array_search,$email_array_replace,$email);
      
      echo $email;
[/code]

NM I GOT THIS IM DUMB>.......