Inline PHP currency conversion

[exchangeRate( 100, 'GBP', 'usd' )]

I had need for this a few days ago, and in the end hacked together this version, it uses CURL and calls Google to get current currencies it can be easily modified, so if people fancy making variants post them up.

so exchange.php

Code:

<?php
function exchangeRate( $amount, $currency, $exchangeIn )
{
    $googleQuery = $amount . ' ' . $currency . ' in ' . $exchangeIn;
    $googleQuery = urlEncode( $googleQuery );
$ch = curl_init(); //set curl variable
$timeout = 10; // set to zero for no timeout
curl_setopt ($ch, CURLOPT_URL, 'http://www.google.com/search?q=' . $googleQuery); //call to Google Servers
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
$file_contents = strip_tags( $file_contents );
curl_close($ch);
 $matches = array();
    preg_match( '/= (([0-9]|\.|,|\ )*)/', $file_contents, $matches );
    return $matches[1] ? $matches[1] : false;
}
?>

And to call the function simply include the following in your page

Code:

<?php require( 'path/to/exchange.php' ); echo '£100 ($' . exchangeRate( 100, 'GBP', 'usd' ) . '  ,€' . exchangeRate( 100, 'GBP', 'euro' ). ')'; ?>

its pretty straight forward,
exchangeRate( 100, 'GBP', 'usd' )
In this example the 100 is the value, the GBP is the default currency and usd is the currency to convert.

It is simple but hopefully it will aid some one

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Nice snippet

Feel free to post it in the tutorial section

I will write up a more detailed tutorial tomorrow and put it in. Its a nice intro to using Google services and CURL so would make a nice programming tutorial

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Thanks for sharing this usefull function

excellent piece of code! I'm updating conversion rates manually on one of my websites every week (if I remember to do the update that is ) This code will be used instead from now on!

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