A function to send a request for payment through Venmo, based on http://davidwalsh.name/curl-post and using the Venmo API

VenmoPaymentRequest

function sendPaymentRequest($email,$amount){
	//http://davidwalsh.name/curl-post
	//set POST variables
	$url = 'https://api.venmo.com/v1/payments';

	$access_token = ; // use your access token
	$phone = $email; // This is email address, phone number, or user id (I think -- email addresses are common)
	$note = "This is a request for a payment of $".$amount." for ...";
	$amount = $amount;
	$audience = 'private';// chose audience


	$fields = array(
		'access_token' => urlencode($access_token),
		'phone' => urlencode($phone),
		'note' => urlencode($note),
		'amount' => urlencode($amount),
		'audience' => urlencode($audience)
		);

	//url-ify the data for the POST
	foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
	rtrim($fields_string, '&');

	//open connection
	$ch = curl_init();

	//set the url, number of POST vars, POST data
	curl_setopt($ch,CURLOPT_URL, $url);
	curl_setopt($ch,CURLOPT_POST, count($fields));
	curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);

	//execute post
	$result = curl_exec($ch);

	//close connection
	curl_close($ch);
}