<?php
    function findstr($line,$condi,$num){
        $a = strpos($line, $condi);
        $arr = explode(' ', substr($line, $a+$num, 20));
        return $arr[0];
    }
 
    $url = "http://www.google.com/search?&q=1usd%3D%3Frmb"; //usd
    $str = file_get_contents($url);
    preg_match_all("/1 U.S. dollar = .* Chinese yuan/", $str, $arr);
    $rate['usd'] = findstr($arr[0][0], '= ', 2);
 
    $url = "http://www.google.com/search?&q=1eur%3D%3Frmb"; //eur
    $str = file_get_contents($url);
    preg_match_all("/1 Euro = .* Chinese yuan/", $str, $arr);
    $rate['eur'] = findstr($arr[0][0], '= ', 2);
 
    print_r($rate);
?>