./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: xmlResetError
인터넷에서 검색을 해보니깐 chcon /usr/local/apache/modules/libphp5.so 이렇게 하면 된다는데... SELinux에만 해당되는군요...