Nothing on PHP pages

Using Slackware 9.1, Apache 1.3, PHP 4.1 and MySQL 4.1 I get blank pages on PHP pages. No errors, nothing. I used to show the source code on these pages, but that was a parsing error. I had one PHP return a database error a while back, not sure what would have changed. I am unsure what sort of configuration issues to post here to help inform you of what my be the problem. Just ask and I will deliver though.

did you try to write this into a php page

and try to show it in your browser??

Check install.txt among your php installation files and look if you put all the configs in your httpd.con.

Yes I did, it worked. I believe we've (me and some other online help folks) that the problem is in the page interacting with MySQL. Do you know of any incompatibilities in MySQL 4.X and PHP 4.X?

nope, I used php 4.x and Mysql 4.x for months without ptoblems
Did you chech php.ini if among the modules ther is a load module about mysql and it's uncommented?
Watch in your php.ini if error reporting is set to all.

do you have ob_start() and ob_end_flush() or anything like that in your php files?

i had this issue before and that was my problem.

watch for vars with special characters in them or function names with a $ infront. I have done this before $var(int)