googlefont.conf

server {
    listen       80;
    server_name fonts.googleapis.com themes.googleusercontent.com;

    root /Users/sarim/Sites/php55/;
    index app_dev.php index.html index.htm;

    location / {
        fastcgi_pass   unix:/usr/local/var/run/php55.sock;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root/googlefont.php;
        include        fastcgi_params;
    }
}

googlefont.php

<?php
$url = 'http://' . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"];
$proxy = array(
        'themes.googleusercontent.com' => '173.194.36.43:80',
        'fonts.googleapis.com' => "74.125.200.95:80");

$mysqli = new mysqli('localhost','dev','dev','googlefont');

$query = "SELECT * FROM googlefont WHERE url='" . $mysqli->real_escape_string($url) . "'";

if($result = $mysqli->query($query)){

    if($row = $result->fetch_object()){
        header('Content-Type: '.$row->mimetype);
        echo $row->data;
    } else {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_PROXY, $proxy[$_SERVER["HTTP_HOST"]]);
        $data = curl_exec ($ch);
        $mimetype = curl_getinfo($ch,CURLINFO_CONTENT_TYPE);
        curl_close ($ch);

        $stmt = $mysqli->prepare("INSERT INTO googlefont (url,mimetype,data) VALUES(?,?,?)");
        $null = NULL;
        $stmt->bind_param("ssb", $url , $mimetype, $null);
        $stmt->send_long_data(2,$data);
        $stmt->execute();
        header('Content-Type: '.$mimetype);
        echo $data;
    }
    $result->close();
}

$mysqli->close();
?>