dmitred

RewriteEngine On
RewriteRule ^user([0-9]+)$ /index.php?id=$1 [L]

class myFilter {
  static private $exclusions;
  static private $excluded;
  static private $value;
	
  public function __construct(Array $exclusions) {
    self::$exclusions = $exclusions;
  }
  static function check($f, $v) {
    return ($f and !(self::$value >= $v[0] and self::$value <= $v[1]));
  }
  static function getFilter($val) {
    self::$value++;
    if ( !array_reduce(self::$exclusions, "myFilter::check",true) ) {
      array_push(self::$excluded, $val);
      return false;
    } else 
      return true;
  }
  public function getExcluded() {
	  return implode( ' ', self::$excluded );
  }
  public function reduce($str) {
    self::$value = -1;
    self::$excluded = [];
    return implode( ' ', array_filter(explode(' ', $str), "myFilter::getFilter" ) );
  }	
}
$f = new myFilter ( [[2,2],[15,39],[78,78],[15,39],[154,154]] );
$text = $f->reduce($text);
echo $f->getExcluded();