Php – GeoIP PHP extension not working on CentOS 7

I can't get the GeoIP PHP extension working on CentOS 7 and PHP 5.5.21.

I first started with yum install php-pecl-geoip and restarted httpd. I then did a simple test:

$record = geoip_record_by_name($_SERVER["REMOTE_ADDR"]);
if ($record) {
    print_r($record);
}

I got an error 500, and in the error log, I see

PHP Fatal error: Call to undefined function geoip_record_by_name()

So I figured the yum package was bad and removed it. I then did pecl install geoip and enabled the extension /etc/php.d/geoip.ini with extension=geoip.so and restarted httpd. Same error – undefined function.

To make sure the install was correct, I tried the pecl install again and received this output:

pecl/geoip is already installed and is the same as the released version 1.0.8

I do have Apache's mod_geoip installed. Do the 2 conflict with each other?

What else can I check?