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You want to use auto_prepend_file. Set this directive in your php.ini or .htaccess file to the path to your
config.php
file and any PHP file accessed will automatically have the contents of the config file prepended to it.For
.htaccess
:php_value auto_prepend_file /full/path/to/file/config.php
Keep in mind this ONLY will work on a server where PHP is run as an Apache module. If PHP is run as a CGI you need to add edit it in your
php.ini
file or put it inside a.user.ini
file just without thephp_value
part.In
Nginx
you could add this line to server configuration insidelocation ~ \.php$
fastcgi_param PHP_VALUE "auto_prepend_file=/full/path/to/file/config.php";