PHP Currency Converter code

A Practical PHP currency conversion program code. if you need it, please refer to it .? PhpFile: CurrencyConverter. php... a Practical PHP currency conversion program code. For more information, see.

 mysql_host = $host;        $this->mysql_user = $user;        $this->mysql_pass = $pass;        $this->mysql_db = $db;        $this->mysql_table = $tb;        $this->checkLastUpdated();        $conn = mysql_connect($this->mysql_host, $this->mysql_user, $this->mysql_pass);        $rs = mysql_select_db($this->mysql_db, $conn);        $sql = "SELECT * FROM " . $this->mysql_table;        $rs = mysql_query($sql, $conn);        while ($row = mysql_fetch_array($rs)) {            $this->exchange_rates[$row['currency']] = $row['rate'];        }    }    /* Perform the actual conversion, defaults to £1.00 GBP to USD */    function convert($amount = 1, $from = "GBP", $to = "USD", $decimals = 2) {        return (number_format(($amount / $this->exchange_rates[$from]) * $this->exchange_rates[$to], $decimals));    }    /* Check to see how long since the data was last updated */    function checkLastUpdated() {        $conn = mysql_connect($this->mysql_host, $this->mysql_user, $this->mysql_pass);        $rs = mysql_select_db($this->mysql_db, $conn);        $sql = "SHOW TABLE STATUS FROM " . $this->mysql_db . " LIKE '" . $this->mysql_table . "'";        $rs = mysql_query($sql, $conn);        if (mysql_num_rows($rs) == 0) {            $this->createTable();        } else {            $row = mysql_fetch_array($rs);            if (time() > (strtotime($row["Update_time"]) + (12 * 60 * 60))) {                $this->downloadExchangeRates();            }        }    }    /* Download xml file, extract exchange rates and store values in database */    function downloadExchangeRates() {        $currency_domain = substr($this->xml_file, 0, strpos($this->xml_file, "/"));        $currency_file = substr($this->xml_file, strpos($this->xml_file, "/"));        $fp = @fsockopen($currency_domain, 80, $errno, $errstr, 10);        if ($fp) {            $out = "GET " . $currency_file . " HTTP/1.1rn";            $out.= "Host: " . $currency_domain . "rn";            $out.= "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5rn";            $out.= "Connection: Closernrn";            fwrite($fp, $out);            while (!feof($fp)) {                $buffer.= fgets($fp, 128);            }            fclose($fp);            $pattern = "{
 }is";            preg_match_all($pattern, $buffer, $xml_rates);            array_shift($xml_rates);            for ($i = 0; $i < count($xml_rates[0]); $i++) {                $exchange_rate[$xml_rates[0][$i]] = $xml_rates[1][$i];            }            $conn = mysql_connect($this->mysql_host, $this->mysql_user, $this->mysql_pass);            $rs = mysql_select_db($this->mysql_db, $conn);            foreach ($exchange_rate as $currency => $rate) {                if ((is_numeric($rate)) && ($rate != 0)) {                    $sql = "SELECT * FROM " . $this->mysql_table . " WHERE currency='" . $currency . "'";                    $rs = mysql_query($sql, $conn) or die(mysql_error());                    if (mysql_num_rows($rs) > 0) {                        $sql = "UPDATE " . $this->mysql_table . " SET rate=" . $rate . " WHERE currency='" . $currency . "'";                    } else {                        $sql = "INSERT INTO " . $this->mysql_table . " VALUES('" . $currency . "'," . $rate . ")";                    }                    $rs = mysql_query($sql, $conn) or die(mysql_error());                }            }        }    }    /* Create the currency exchange table */    function createTable() {        $conn = mysql_connect($this->mysql_host, $this->mysql_user, $this->mysql_pass);        $rs = mysql_select_db($this->mysql_db, $conn);        $sql = "CREATE TABLE " . $this->mysql_table . " ( currency char(3) NOT NULL default '', rate float NOT NULL default '0', PRIMARY KEY(currency) ) ENGINE=MyISAM";        $rs = mysql_query($sql, $conn) or die(mysql_error());        $sql = "INSERT INTO " . $this->mysql_table . " VALUES('EUR',1)";        $rs = mysql_query($sql, $conn) or die(mysql_error());        $this->downloadExchangeRates();    }}?>

Copy the above code into a new file and save it as CurrencyConverter. php. whenever you need to make a conversion just include the class file and call the 'convert' function. you will need to enter your own mysql database variables such as the login details. the example below will convert £2. 50 GBP into US Dollars ($ ).

 convert(2.50, 'GBP', 'USD');?>

Tutorial link:

Reprint at will ~ However, please keep the tutorial address★