Member Avatar for michael123

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

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Thread summary: reported PHP scripts not executing after installation. pointed out that the server must have PHP support enabled, noted that Apache configuration can be distro-specific, and asked about versions. The following is a concise diagnostic checklist and common fixes that are still useful years later.

Start with a few quick checks: confirm the PHP runtime is installed with php -v. Inspect Apache's loaded modules with apachectl -M (or httpd -M) to see whether PHP integration is present (mod_php, proxy_fcgi, etc.). Drop a simple probe into the web root named phpinfo.php to verify parsing:

<?php
phpinfo();
?>

Request that file over HTTP (not file://) and watch whether a formatted page appears. Restart the web server or the PHP service after configuration changes (systemd or init commands depend on the distro).

Common failure modes and how to diagnose them: when the browser downloads the source or shows raw PHP, Apache is not handing .php to a PHP handler; check vhost/conf for a handler or proxy configuration. Blank pages usually mean a fatal PHP error—check the Apache error log and PHP-FPM or PHP error logs. Permission issues, wrong document root, or SELinux file contexts can silently block execution. Using short tags (<?) can fail if short_open_tag is disabled; always test with <?php.

Compatibility and distro notes: modern setups use PHP-FPM + proxy_fcgi; older setups use mod_php. Package names and enabling commands differ by distribution (Debian/Ubuntu helpers versus RHEL/Fedora packages). Helpful diagnostics to include when troubleshooting further are the outputs of php -v, apachectl -v, apachectl -M, and the leading lines of the Apache error log.

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Member Avatar for axieaxie

the server must support php, then you can use it

Member Avatar for 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

Member Avatar for wakOrang3

what versions of apache and php do you have?

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