Use Google finance calculator to convert currency with php

gistfile1.php

<?php
function convertCurrency($amount, $from, $to){
	$data = file_get_contents("https://www.google.com/finance/converter?a=$amount&from=$from&to=$to");
	preg_match("/<span class=bld>(.*)<\/span>/",$data, $converted);
	$converted = preg_replace("/[^0-9.]/", "", $converted[1]);
	return number_format(round($converted, 3),2);
}

echo convertCurrency("10.00", "GBP", "USD");

@graphgear1000

Fixed:

function convert($from,$to,$amount){
    $url = "https://www.google.com/search?q=".$from.$to;
    $request = curl_init();
    $timeOut = 0;
    curl_setopt ($request, CURLOPT_URL, $url);
    curl_setopt ($request, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt ($request, CURLOPT_USERAGENT,"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36");
    curl_setopt ($request, CURLOPT_CONNECTTIMEOUT, $timeOut);
    $response = curl_exec($request);
    curl_close($request);

    preg_match('~<span [^>]* id="knowledge-currency__tgt-amount"[^>]*>(.*?)</span>~si', $response, $finalData);
    return floatval((floatval(preg_replace("/[^-0-9\.]/","", $finalData[1]))/100) * $amount);
}

Thanks a lot @alissonlinneker.
Though I'd suggest replacing $url with:
$url = "https://www.google.com/search?q=".$from."+to+".$to;
because in some cases like BRL to CAD, Above function was throwing exception.

@graphgear1000

Fixed:

function convert($from,$to,$amount){
    $url = "https://www.google.com/search?q=".$from.$to;
    $request = curl_init();
    $timeOut = 0;
    curl_setopt ($request, CURLOPT_URL, $url);
    curl_setopt ($request, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt ($request, CURLOPT_USERAGENT,"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36");
    curl_setopt ($request, CURLOPT_CONNECTTIMEOUT, $timeOut);
    $response = curl_exec($request);
    curl_close($request);

    preg_match('~<span [^>]* id="knowledge-currency__tgt-amount"[^>]*>(.*?)</span>~si', $response, $finalData);
    return floatval((floatval(preg_replace("/[^-0-9\.]/","", $finalData[1]))/100) * $amount);
}

Need a little help here,
I used above code, tested it on my local environment and it worked smooth as butter, but once I uploaded this to my production environment, it started throwing errors, I debugged and found that Google isn't allowing this code to scrape their data. It gives "302 Moved" Error. Further explanation from Google is: "Our systems have detected unusual traffic from your computer network. Please try your request again later". So, anybody has any tip for that??

Get currency conversion .... https://pastebin.com/TFewge8t

go for it ...

public function convertCurrency()
{
$amounts = 597;
$from_currency='USD';
$to_currency='INR';
$url = 'https://www.google.co.za/search?q='.$amounts.'+' . $from_currency . '+to+' . $to_currency;

    $cSession = curl_init();

    curl_setopt($cSession, CURLOPT_URL, $url);
    curl_setopt($cSession, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($cSession, CURLOPT_SSL_VERIFYPEER, true);

    $buffer = curl_exec($cSession);
    curl_close($cSession);

    preg_match("/<div class=\"J7UKTe\">(.*)<\/div>/",$buffer, $matches);
    $matches = preg_replace("/[^0-9.]/", "", $matches[1]);
    $amount =  round($matches, 2);
    $total = substr($amount, mb_strlen($amounts));
    return number_format($total,2);
}

Hi there, there is free european exchange rates available daily
https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml

Change URL to " https://finance.google.com/finance/converter" fixed my code

@graphgear1000

Fixed:

function convert($from,$to,$amount){
    $url = "https://www.google.com/search?q=".$from.$to;
    $request = curl_init();
    $timeOut = 0;
    curl_setopt ($request, CURLOPT_URL, $url);
    curl_setopt ($request, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt ($request, CURLOPT_USERAGENT,"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36");
    curl_setopt ($request, CURLOPT_CONNECTTIMEOUT, $timeOut);
    $response = curl_exec($request);
    curl_close($request);

    preg_match('~<span [^>]* id="knowledge-currency__tgt-amount"[^>]*>(.*?)</span>~si', $response, $finalData);
    return floatval((floatval(preg_replace("/[^-0-9\.]/","", $finalData[1]))/100) * $amount);
}

Thank you, Alisson!!!!! ♥

Hello
In above all solutions USD to CNY converter not working

Can you please help me

Thanks!!

Hello
In above all solutions USD to CNY converter not working

Can you please help me

Thanks!!

Yes! Сan you give another solution?

can anyone pls help me with any free currency converter api?

Any solutions!!

It is not the best solution and not very clean, but you can do this:

1. Convert from your old currency to BTC (Bitcoin)
2. Convert your Bitcoin to your new currency! ;-)

Example for 100 EUR to USD:

1. 100 EUR to Bitcoin. Result: 0.01282849
   https://blockchain.info/tobtc?currency=EUR&value=100

2. Convert 01282849 (without "0.") to USD
   https://blockchain.info/frombtc?value=01282849&currency=USD

Attention: In this solution you can convert max 1 full Bitcoin (~8000 EUR)
PHP Code:

function convert($amount, $from, $to)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://blockchain.info/tobtc?currency=" . $from . "&value=" . $amount);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$conversion = curl_exec($ch);
$conversion = substr($conversion, 2);
curl_setopt($ch, CURLOPT_URL, "https://blockchain.info/frombtc?currency=" . $to . "&value=" . $conversion);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
return $conversion = curl_exec($ch);
}
echo convert(100, "EUR", "USD");

Here we are again :(