(PECL geoip >= 1.0.1)
geoip_db_filename — Returns the filename of the corresponding GeoIP Database
The geoip_db_filename() function returns the filename of the corresponding GeoIP Database.
It does not indicate if the file exists or not on disk, only where the library is looking for the database.
The database type as an integer. You can use the various constants defined with this extension (ie: GEOIP_*_EDITION).
Returns the filename of the corresponding database, or NULL on error.
Example #1 A geoip_db_filename() example
This will output the filename of the corresponding database.
<?php
print geoip_db_filename(GEOIP_COUNTRY_EDITION);
?>
以上例程会输出：
/usr/share/GeoIP/GeoIP.dat