Description:
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I have searched the web, posted to discussion lists and basically done my homework, but try as I may I've yet to find a solution to the following problem.

I have recently installed MySQL 4.0.21, Apache 2.0.52 and PHP 5.0.2 on a Windows XP SP 2 machine. (BTW, I've successfully installed and configured Apache/MySQL/PHP dozens of times before under just about every OS.) I uncommented the php_mysql.dll line in the php.ini file as usual, but when I run any script that uses one of the mysql functions, I get an error message that reads, for instance:

Fatal error: Call to undefined function mysql_connect() in...

In my case, I don't get any errors from Apache when the server is started or re-started, but from what I've read here and there it seems that this problem is linked to php_mysql.dll not being loaded properly. I've checked my PATH (no MySQL doesn't come before PHP; in fact it's not even there), I've tried copying libmysql.dll and php_mysql.dll to WINDOWS/SYSTEM32, and I've tried basically every other suggestion I've read, but *nothing* works.

I see that bug report #29912 seems to be pretty similar to mine, but it's been dismissed as "bogus". Curiously enough, lots of people out there seem to be having the same problem as we are who were not having any problems before. I'm not of course saying that the problem is "definitely" with PHP, but something funny's going on...