Question

我的PHP代码与以下代码一起位于HTML文件中。我不知道PHP header（）为什么不重定向。 FireFox说“页面没有正确重定向”

更新我添加了我正在尝试重定向的整个HTML代码。

    <?php
    function http_protocol() {
        return (isset($_SERVER['HTTPS']) ? 'https' : 'http') . '://';
    }

    function http_host() {
        return $_SERVER['HTTP_HOST'];
    }

    function http_uri() {
        return parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
    }

    function http_refactored_query_strings() {
        $queries = explode('&', $_SERVER['QUERY_STRING']);
        $refactoredQueries = [];

        foreach( $queries as $query ) {
            $refactoredQueries[] = filter_var(explode('=', $query)[1], FILTER_SANITIZE_STRING);
        }

        $queries = implode('/', $refactoredQueries);

        return $queries ?: '';
    }

    function http_refactored_url() {
        return http_protocol() . http_host() . http_uri() . http_refactored_query_strings();
    }

    header ('Location ' . http_refactored_url());exit;
?>
<?php
class Pagination {
public $current_page;
public $per_page;
public $total_count;
public $pages_articles;

public function __construct($page=1, $per_page=20, $total_count=0) {
$this->current_page = (int)$page;
$this->per_page = (int)$per_page;
$this->total_count = (int)$total_count;
$this->pages_articles=array(
'<div class="article-loop"><img src="http://i.imgur.com/CmU3tnl.jpg"></div>',
'<div class="article-loop"><img src="http://i.imgur.com/TDdxS9H.png"></div>',
'<div class="article-loop"><img src="http://i.imgur.com/39rpmwB.jpg"></div>',
'<div class="article-loop"><img src="http://i.imgur.com/1lBZQ1B.png"></div>',
'<div class="article-loop"><img src="https://i.imgur.com/Y5Ld4Qfh.jpg"></div>',
'<div class="article-loop"><img src="http://i.imgur.com/8HumESY.jpg"></div>',
'<div class="article-loop"><img src="http://i.imgur.com/CqCZBvk.png"></div>',
'<div class="article-loop"><img src="http://i.imgur.com/q3I72Ul.png"></div>',
'<div class="article-loop"><img src="http://i.imgur.com/YrzP9A3.jpg"></div>',
'<div class="article-loop"><img src="http://i.imgur.com/xWmaeb6.png"></div>',
'<div class="article-loop"><img src="https://i.imgur.com/GpGBVZW.png"></div>',
'<div class="article-loop"><img src="http://i.imgur.com/wQVPRVp.png"></div>');
$this->total_count = sizeof($this->pages_articles);
}

public function offset() {
    return ($this->current_page - 1) * $this->per_page;
 }
public function total_pages() {
    //$this->total_count=sizeof($this->pages_articles);
    return ceil($this->total_count/$this->per_page);
 }
public function previous_page() {
    return $this->current_page - 1;
 } 
public function next_page() {
    return $this->current_page + 1;
 }
public function has_previous_page() {
    return $this->previous_page() >= 1 ? true : false;
 }
public function has_next_page() {
    return $this->next_page() <= $this->total_pages() ? true : false;
 }
}
$page = !empty($_GET['page']) ? (int)$_GET['page'] : 1;
$per_page = 3;
//$total_count=8;
$pagination = new Pagination($page, $per_page, $total_count);
?>

<html>
<body>
<div>
<?php
  $i = $pagination->offset()  ;
        $limit = $pagination->per_page;
        while($i<$pagination->total_count && $limit>0) {
            echo $pagination->pages_articles[$i]."<br>";
            $i++;
            $limit--;
        }
?>
</div>
<ul>
<?php
    if($pagination->has_previous_page()) {
        echo '<li style="display:inline"><a href="?page='.$pagination->previous_page().'">&laquo;</a></li>';
    } else {
        echo '<li style="display:inline" class="disabled"><a href="#">&laquo;</a></li>';
    }
    for($i=1; $i<=$pagination->total_pages(); $i++) {
        echo '<a href="?page='.$i.'"><li style="display:inline; margin-left:5px; margin-right:5px">'.$i.'</li></a>';
    }
    if($pagination->has_next_page()) {
        echo '<li style="display:inline"><a href="?page='.$pagination->next_page().'">&raquo;</a></li>';
    } else {
        echo '<li style="display:inline" class="disabled"><a href="#">&raquo;</a></li>';
    }
?>
</ul>
</body>
</html>

Answer 1

我假设您的网址中没有$_GET个参数。在这种情况下，当您遍历$refactoredQueries[] = filter_var(explode('=', $query)[1]时，您将抛出异常：

未定义的偏移量：1

如果您拥有 $_GET参数，该页面将正确重定向。

要解决此问题，您需要在尝试访问之前检查查询是否存在：

if ($query) {
  $refactoredQueries[] = filter_var(explode('=', $query)[1], FILTER_SANITIZE_STRING);
}

重定向没有正确发生，因为当没有查询字符串时它会陷入无限循环。要更正此问题，只需在尝试重定向时检查查询字符串是否存在。如果没有任何查询字符串，您最终会在当前所在的页面上，因此您只需exit：

function http_refactored_url() {
  if (http_refactored_query_strings()) {
    return http_protocol() . http_host() . http_uri() . http_refactored_query_strings();
  }
  else {
    exit;
  }
}

希望这有帮助！：）

PHP header（）不重定向

1 个答案: