在我的功能中。php文件我为template\\u重定向挂钩添加了一个自定义操作，该挂钩必须强制下载存储在服务器上的文件。当下载的代码位于Wordpress之外的一个简单PHP文件中时，它可以正常工作。但是，只要我在模板重定向挂钩中添加此代码，该功能就会被破坏。Chrome表示“无法访问该网站…ERR\\u INVALID\\u RESPONSE”。没有错误500或其他错误。。。

以下是下载代码：

<?php
$filename = $_SERVER[\'DOCUMENT_ROOT\'] . \'path-to-my-wordpress/wp-content/uploads/export/test.html\';
header( "Expires: 0" );
header( "Cache-Control: no-cache, no-store, must-revalidate" );
header( \'Cache-Control: pre-check=0, post-check=0, max-age=0\', false );
header( "Pragma: no-cache" );
header( "Content-type: text/html" );
header( "Content-Disposition:attachment; filename=\\"" . basename( $filename ) . "\\"" );
header( "Content-Type: application/force-download" );
readfile( "{$filename}" );
?>

以下是template\\u重定向挂钩：

add_action( \'template_redirect\', \'my_template_redirect\' );
function my_template_redirect() {
$filename = $_SERVER[\'DOCUMENT_ROOT\'] . \'path-to-my-wordpress/wp-content/uploads/export/test.html\';
header( "Expires: 0" );
header( "Cache-Control: no-cache, no-store, must-revalidate" );
header( \'Cache-Control: pre-check=0, post-check=0, max-age=0\', false );
header( "Pragma: no-cache" );
header( "Content-type: text/html" );
header( "Content-Disposition:attachment; filename=\\"" . basename( $filename ) . "\\"" );
header( "Content-Type: application/force-download" );
readfile( "{$filename}" );
exit();
}

有什么想法吗？

EDIT

在进行了一些测试之后，问题似乎来自我试图运行此下载的特定URL。事实上，我的代码是这样的：

add_action( \'template_redirect\', \'my_template_redirect\' );
function my_template_redirect() {
    if ( preg_match( "/\\/wp-admin\\/export$/", $_SERVER[\'REQUEST_URI\'] ) ) {
        $filename = $_SERVER[\'DOCUMENT_ROOT\'] . \'path-to-my-wordpress/wp-content/uploads/export/test.html\';
        header( "Expires: 0" );
        header( "Cache-Control: no-cache, no-store, must-revalidate" );
        header( \'Cache-Control: pre-check=0, post-check=0, max-age=0\', false );
        header( "Pragma: no-cache" );
        header( "Content-type: text/html" );
        header( "Content-Disposition:attachment; filename=\\"" . basename( $filename ) . "\\"" );
        header( "Content-Type: application/force-download" );
        readfile( "{$filename}" );
        exit();
    }
}

URL为/wp admin/export，这将启动文件下载。如果没有此URL条件，当我到达基本站点URL（=http://mysite.dev/). 但随着情况的发展http://mysite.dev/wp-admin/export, 它坏了。我也尝试过不使用wp admin前缀，但它也会中断。

add_action( \'admin_post_export_page\', \'export_page\' );
function export_page() {
    // any code you want
}

add_action( \'template_redirect\', \'my_template_redirect\' );
function my_template_redirect() {
    if ( strpos( $_SERVER[\'REQUEST_URI\'], admin_url( \'export\' ) ) !== false ) {
        $upload_dir = wp_upload_dir();
        $filename = $upload_dir[\'basedir\'] . \'/export/test.html\';

        header( "Expires: 0" );
        header( "cache-Control: no-cache, no-store, must-revalidate" );
        header( "Pragma: no-cache" );
        header( "content-disposition: attachment; filename=" . basename( $filename ) );
        header( "content-type: application/octet-stream" );
        header( "content-length: " . filesize( $file ) );
        readfile( $filename );
        die();
    }
}

 add_action( \'template_redirect\', \'my_template_redirect\' );
    function my_template_redirect() {
    $filename = $_SERVER[\'DOCUMENT_ROOT\'] . \'path-to-my-wordpress/wp-content/uploads/export/test.html\';
    header( "Expires: 0" );
    header( "Cache-Control: no-cache, no-store, must-revalidate" );
    header( \'Cache-Control: pre-check=0, post-check=0, max-age=0\', false );
    header( "Pragma: no-cache" );
    header( "Content-type: text/html" );
    header( "Content-Disposition:attachment; filename=\\"" . basename( $filename ) . "\\"" );
    header( "Content-Type: application/force-download" );
    readfile( "{$filename}" );
    // Add your redirect page here
    wp_redirect( home_url( \'/pagename/\' ) ); /// works on my install sends to new page
    exit();
    }