php pdo verilerim silindi

$KullaniciAdi = strip_tags(addslashes(str_replace(array_keys( $substitutions ), $substitutions, $_POST["KullaniciAdi"])));

   $substitutions = array(
        '&'  => '',
        ';'  => '',
        '| ' => '',
        '-'  => '',
        '$'  => '',
        '('  => '',
        ')'  => '',
        '`'  => '',
        '||' => '',
    );
  
$KullaniciAdi = addslashes(str_replace(array_keys( $substitutions ), $substitutions, $_POST["Kullanici"]));