为什么包括阻止加载php页面？

Question

I have my index.php page and just afrer my header i want to include a message.php file. This message.php file executes some mysql queries, runs a couple of functions and in the end makes echo of some text.

If i go to mysite.com/message.php - i can see all the text i need in my browser. But if i add the following line:

<?php include "message.php"; ?>

to my index.php, the page loads only until the include statement and then produces 500 internal server error. How is that even possible? I'm totaly stuck here...

EDIT: I've figured it out, thanks for pointing me to the right direction with apache logs. Even though i didn't have the log access, i've made the edit to .htaccess with a statement php_value error_log log.txt. It dumped the error in the txt file in the same directory. The error was produced by a function that was a name that was already in use. That's why a separate enviroment wasn't producing the error.

Answer 1

This is possible becuase you have an error in your message.php file! The next step is to figure out what is throwing the error. You can look at your web servers error logs to see the exact line. To solve this problem you only have to focus on the code in your message.php file.