Why am I getting a blank page when running PHP scripts to access MySQL database?

1. Run your PHP application in a Web browser with a URL like http://localhost:8080/fyicenter/index.php. You get no page errors, but nothing in the browser window.

2. If you click View > Source menu, you will get something like:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 
Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; 
charset=windows-1252"></HEAD>
<BODY></BODY></HTML>

3. You are probably going to ask what happens to the application and which code generated this blank page.

4. Open in "notepad" Apache access log file at: C:\Program Files\Apache Software Foundation\Apache2.2\logs\access.log. The access record looks normal:

... "GET /fyicenter/index.php HTTP/1.1" 200 -

5. Open in "notepad" Apache error log file at: C:\Program Files\Apache Software Foundation\Apache2.2\logs\error.log. You should see a line like this:

... [error] [client 127.0.0.1] PHP Fatal error:  Call to 
   undefined function mysql_connect() in C:\Program Files
   \Apache Software Foundation\Apache2.2\htdocs\fyicenter
   \index.php on line 40

6. This error tells us that there is a problem in running MySQL functions in the PHP engine. Read our Configuring PHP for MySQL tutorial for fix this issue.