Bitcoin Forum

$bitcoin = new bitcoin(jsoncredentials);

$bitcoin->getbalance(  account  );

if ($balance >= get_Price( id )) {
}

walletnotify=/home/btcdev/walletnotifyclient 127.0.0.1 1337 %s

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h> 

int main(int argc, char *argv[])
{
    if (argc < 4) {
	printf("\n Usage: %s <hostname> <port> <TxID> \n",argv[0]);
	exit(0);
    }

    int sockfd, portno, n;
    struct sockaddr_in serv_addr;
    struct hostent *server;

    char buffer[256];

    portno = atoi(argv[2]);
    sockfd = socket(AF_INET, SOCK_STREAM, 0);
    if (sockfd < 0) {
	fprintf(stderr,"ERROR, opening socket\n");
	exit(0);
    }
    server = gethostbyname(argv[1]);
    if (server == NULL) {
        fprintf(stderr,"ERROR, no such host\n");
        exit(0);
    }
    bzero((char *) &serv_addr, sizeof(serv_addr));
    serv_addr.sin_family = AF_INET;
    bcopy((char *)server->h_addr, 
         (char *)&serv_addr.sin_addr.s_addr,
         server->h_length);
    serv_addr.sin_port = htons(portno);
    if (connect(sockfd,(struct sockaddr *) &serv_addr,sizeof(serv_addr)) < 0) {
	fprintf(stderr,"ERROR, connecting\n");
	exit(0);
    }
    snprintf(buffer, sizeof(buffer), "%s",argv[3]);
    n = write(sockfd, buffer, strlen(buffer));
    if (n < 0) {
	fprintf(stderr,"ERROR, writing to socket\n");
	exit(0);
    }
    close(sockfd);
    return 0;
    exit(0);
}

<?php
include 'bitcoin_lib.php';
$bitcoin = new bitcoin('http://user:pass@127.0.0.1:8332/');

$txid = array(
    'unconfirmed' => array(),
    'confirmed' => array()
);

$currentBlock = 0; //the current block
$minConfirmation = 3; //minimum tansaction confirmations
$blockThreshold = 3; //blocks to wait checking transaction for confirmations

$server = stream_socket_server("tcp://127.0.0.1:1337", $errno, $errorMessage);
if ($server === false) {
	throw new UnexpectedValueException("Could not bind to socket: $errorMessage");
}

for (;;) {
	$client = @stream_socket_accept($server);
	if ($client) {
		$message = stream_get_contents($client);
		if (strlen($message) == 64) { //recived a TXID
			echo 'New tx:'.$message."\n";
			$txid['unconfirmed'][] = array(
			    'onBlock' => $currentBlock + $blockThreshold,
			    'txid' => $message
			);
		}
		else { //recived the current block
			$currentBlock = $bitcoin->getblockcount();
			echo 'New Block:'.$currentBlock."\n";
			//loop through unconfirmed transactions on new block
			foreach ($txid['unconfirmed'] as $key => $unconfirmedTX) {
				if($currentBlock >= $unconfirmedTX['onBlock']) {
					echo $unconfirmedTX['txid'].' : reached blockThreshold'."\n";
					$gettransaction = $bitcoin->gettransaction($unconfirmedTX['txid']);
					if($gettransaction['confirmations'] >= $minConfirmation) { //transaction has been confirmed
						echo $unconfirmedTX['txid'].' : confirmed'."\n";
						unset($txid['unconfirmed'][$key]);
						$txid['confirmed'][] = $gettransaction;
					}
					else { //Transaction does not have min confirmations
						echo $unconfirmedTX['txid'].' : unconfirmed wait '.$unconfirmedTX['confirmations'].' blocks'."\n";
						$blockstowait = $minConfirmation - $unconfirmedTX['confirmations']; //set blocks to wait before rechecking transaction
						$gettransaction['onBlock'] = $currentBlock + $blockstowait; 
						$txid['unconfirmed'][$key] = $gettransaction;
					}
				}
				else {
					$blockstowait = $unconfirmedTX['onBlock'] - $currentBlock;
					echo $unconfirmedTX['txid'].' : has not reached blockThreshold, wait '.$blockstowait.' blocks'."\n";
				}
			}
		}
		fclose($client);
	}
	
}
?>