Before talking about heredoc or nowdoc, we need to know that they are different ways to specify a string in PHP. Maybe I should have talked about this topic in the section about variables, but it would be too long for someone to read quickly.

I came up with this post while creating an article about the DOMDocument class in PHP, which is quite long. However, it is designed to help you find what you need to know quickly. I don’t expect anyone to read the entire post.