Following the instructions at http://dan.drydog.com/apache2php.html to the letter, I get the following error:
# /usr/local/apache/bin/apachectl start httpd: Syntax error on line 53 of /usr/local/apache/conf/httpd.conf: Cannot load /usr/local/apache/modules/libphp5.so into server: /usr/local/apache/modules/libphp5.so: undefined symbol: zend_ini_string I am in RedHat Enterprise 4, with PHP 5.2.5. Thank you.