cannot run php on apache

[michael123]

Once php has been installed on apache server, why I cannot run php program on it, any idea?

[axieaxie]

the server must support php, then you can use it

[comprookie2000]

You need to add support to apache as stated something like this if you have apache2;
APACHE2_OPTS="-D PHP4"
On my distro (Gentoo) its in /etc/conf.d/apache2/apache2.conf
Each distro may be a little different like /etc/apache2/httpd.conf

[wakOrang3]

what versions of apache and php do you have?