Pure PHP code is best to remove the PHP end tag at the end of the file

If the file content is pure PHP code, it is best to remove the PHP end tag at the end of the file. This avoids having to accidentally add a space or line break after the PHP end tag, which causes PHP to start outputting these blanks, and there is no intention to output the script at this time.

<? PHP Echo "Hello World"; // ... more code Echo "Last Statement"; // the script ends with no PHP end tag

http://php.net/manual/zh/language.basic-syntax.phptags.php

Pure PHP code is best to remove the PHP end tag at the end of the file