PHP 从URL中的查询字符串中删除所有参数，除了一个

Posted 2021-05-14

$url = $_SERVER['PHP_SELF'];

$url_parts = parse_url($url);
 
   $new_url = $url_parts['scheme'].'://'.$url_parts['host'].$url_parts['path'];
 
   if (isset($url_parts['query'])) {
 
      parse_str($url_parts['query'], $query_arguments);
      $f = create_function('$a','return $a==\'page\';');
      $query_arguments = array_flip(array_filter(array_flip($query_arguments), $f));
 
     $new_url .= '?'.http_build_query($query_argumenys);
 
   }