Why is PHP written in HTML code automatically annotated???

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This is because your HTML code is output directly to the Web page without being executed by the PHP engine.
and the browser is a fault-tolerant mechanism, this will be annotated operation, so the structure of the page will be fixed.

What you have to do is deploy a PHP execution environment, such as lamp.

See the tab above you, maybe you use the template engine, you can see whether the relevant configuration supports native PHP tags.
As you describe it very clearly, the other answers upstairs are also possible.

Http://www.cnblogs.com/deityd ...

Your template engine configuration is not enabled for Php_tag support, or is not so used.

Change the file name to userindex.php try it.

Write PHP in HTML in this format.

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