https - PHP、HTTPS、表单提交

Question

我们最近切换到 HTTPS，当提交我们的一份表单时，Firefox 会弹出:

Although this page is encrypted, the information you have entered is to be sent over an unencrypted connection and could easily be read by a third party.

Are you sure you want to continue sending this information?

选择"is"后，表单会提交并且页面会重新加载，但信息实际上并未发布？

我错过了什么吗？

Answer 1

基本上，这意味着:

<form action="http://www..."

必须更改为

<form action="https://www..."

因为我们没有提交到安全 URL。