将http标头添加到wordpress [英] add http header to wordpress

问题描述

我正在尝试按需构建自定义zip文件，并且发现了一些似乎可以正常工作的代码 http://www.9lessons.info/2012/06 /creating-zip-file-with-php.html

i'm trying to build custom zip files on demand and have found some code that seems to work fine http://www.9lessons.info/2012/06/creating-zip-file-with-php.html

我已经在我的wordpress模板中插入了代码，唯一的是header()

i've inserted the code in my wordpress template and the only thing is that the header()

必须在模板加载之前发送

have to be sent before the template is loaded

我如何用wordpress做到这一点?

how can i do this with wordpress?

带有标头的代码在这里

$zip = new ZipArchive();            // Load zip library 
$zip_name = time().".zip";          // Zip name
if($zip->open($zip_name, ZIPARCHIVE::CREATE)!==TRUE){       // Opening zip file to load files
    $error .=  "* Sorry ZIP creation failed at this time<br/>";
}
foreach($post['files'] as $file){               
    $zip->addFile($file_folder.$file);          // Adding files into zip
}
$zip->close();
if(file_exists($zip_name)){
    // push to download the zip
    header('Content-type: application/zip');
    header('Content-Disposition: attachment; filename="'.$zip_name.'"');
    readfile($zip_name);
    // remove zip file is exists in temp path
    unlink($zip_name);
}

推荐答案

Wordpress为此有一个钩子.通过调用add_action函数将标头添加到send_headers挂钩.

Wordpress has a hook for this. Add the headers to the send_headers hook by calling the add_action function.

$zip = new ZipArchive();
$zip_name = time().".zip";
if($zip->open($zip_name, ZIPARCHIVE::CREATE)!==TRUE){
    $error .=  "* Sorry ZIP creation failed at this time<br/>";
}
foreach($post['files'] as $file) {               
    $zip->addFile($file_folder.$file);
}
$zip->close();
if(file_exists($zip_name)){
    add_action( 'send_headers', 'my_headers' );
    readfile($zip_name);
    // put this somewhere or return it
    // so it can be retrieved later, otherwise
    // it might print before your headers
    // are sent
    unlink($zip_name);
}

function my_headers() {
    header('Content-type: application/zip');
    header('Content-Disposition: attachment;
}

这一切都需要进入主题文件夹中functions.php文件中的功能

This will all need to go in a function in your functions.php file in your theme folder

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