虽然没有提及，但在某些情况下可以有所帮助:

var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
    if (xhr.readyState !== 4) return;
    if (xhr.status === 200) {
        var doc = iframe.contentWindow.document;
        doc.open();
        doc.write(xhr.responseText);
        doc.close();
    }
}
xhr.open('GET', url, true);
xhr.send(null);

I came across this issue when running a wordpress web site. I tried all sorts of things to fix it and wasn't sure how, ultimately the issue was because I was using DNS forwarding with masking, and the links to external sites were not being addressed properly. i.e. my site was hosted at http://123.456.789/index.html but was masked to run at http://somewebSite.com/index.html. When i entered http://123.456.789/index.html in the browser clicking on those same links resulted in no X-frame-origins issues in the JS console, but running http://somewebSite.com/index.html did. In order to properly mask you must add your host's DNS name servers to your domain service, i.e. godaddy.com should have name servers of example, ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com, if you were using digitalocean.com as your hosting service.

当我尝试在iframe中嵌入moodle 2时，我也有同样的问题，解决方案是站点管理►安全►HTTP安全并检查允许框架嵌入

这就是解决办法!!

FB.Event.subscribe('edge.create', function(response) {
    window.top.location.href = 'url';
});

这是唯一适用于facebook应用的方法!

我几乎尝试了所有的建议。然而，唯一真正解决这个问题的是:

在PHP文件所在的文件夹中创建一个.htaccess文件。 将这一行添加到htaccess: 报头总是不设置x帧选项

通过来自另一个域的iframe嵌入PHP之后应该可以工作。

此外，你可以在你的PHP文件的开头添加:

header('X-Frame-Options: ALLOW');

然而，在我的情况下，这是不必要的。

我在mediawiki上遇到了同样的问题，这是因为服务器出于安全原因拒绝将页面嵌入到iframe中。

我写了

$wgEditPageFrameOptions = "SAMEORIGIN"; 

导入mediawiki PHP配置文件。

希望能有所帮助。