我厌倦了寻找有关如何获取货币汇率并将其定期使用 PHP 存储在我的数据库中的解决方案。我已成功连接到我的数据库，但无法更新速率。
我有一个名为 Stock_currency 的表
我也有名为 [Currency] [Spot_Rate] [Sell_Rate] [Amont] [Buy_Rate] 的列
这是我试图更改为我的解决方案的 PHP 代码
class CurrencyConverter {
var $xml_file = "www.ecb.int/stats/eurofxref/eurofxref-daily.xml";
var $localhost, $root, $root, $mohamed, $stock_currency;
var $exchange_rates = array();
//Load Currency Rates
function CurrencyConverter($host,$user,$pass,$db,$tb) {
$this->localhost = $host;
$this->root = $user;
$this->root = $pass;
$this->mohamed = $db;
$this->stock_currency = $tb;
$this->checkLastUpdated();
$conn = mysql_connect($this->localhost,$this->root,$this->root);
$rs = mysql_select_db($this->mohamed,$conn);
$sql = "SELECT * FROM ".$this->stock_currency;
$rs = mysql_query($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->localhost,$this->root,$this->root);
$rs = mysql_select_db($this->mohamed,$conn);
$sql = "SHOW TABLE STATUS FROM ".$this->mohamed." LIKE '".$this->stock_currency."'";
$rs = mysql_query($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/1.1\r\n";
$out .= "Host: ".$currency_domain."\r\n";
$out .= "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5\r\n";
$out .= "Connection: Close\r\n\r\n";
fwrite($fp, $out);
while (!feof($fp)) {
$buffer .= fgets($fp, 128);
}
fclose($fp);
$pattern = "{<Cube\s*currency='(\w*)'\s*rate='([\d\.]*)'/>}is";
preg_match_all($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->localhost,$this->root,$this->root);
$rs = mysql_select_db($this->mohamed,$conn);
foreach($exchange_rate as $currency=>$rate) {
if((is_numeric($rate)) && ($rate != 0)) {
$sql = "SELECT * FROM ".$this->stock_currency." WHERE currency='".$currency."'";
$rs = mysql_query($sql,$conn) or die(mysql_error());
if(mysql_num_rows($rs) > 0) {
$sql = "UPDATE ".$this->stock_currency." SET rate=".$rate." WHERE currency='".$currency."'";
} else {
$sql = "INSERT INTO ".$this->stock_currency." VALUES('".$currency."',".$rate.")";
}
$rs = mysql_query($sql,$conn) or die(mysql_error());
}
}
}
}
/* Create the currency exchange table */
function createTable() {
$conn = mysql_connect($this->localhost,$this->root,$this->root);
$rs = mysql_select_db($this->mohamed,$conn);
$sql = "CREATE TABLE ".$this->stock_currency." ( 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->stock_currency." VALUES('EUR',1)";
$rs = mysql_query($sql,$conn) or die(mysql_error());
$this->downloadExchangeRates();
}
}
?>
我已要求兑换 1.00 英镑 £
<?php
include('CurrencyConverter');
$x = new CurrencyConverter('localhost','root','root','mohamed','Stock_Currency');
echo $x->convert(1.00,'GBP','USD');
?>
这是我收到的错误
( ! ) Warning: include(CurrencyConverter) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in C:\wamp\www\Currency.php on line 2
Call Stack
# Time Memory Function Location
1 0.0005 672752 {main}( ) ..\Currency.php:0
我也不明白这个错误信息
( ! ) Warning: include() [<a href='function.include'>function.include</a>]: Failed opening 'CurrencyConverter' for inclusion (include_path='.;C:\php\pear') in C:\wamp\www\Currency.php on line 2
Call Stack
# Time Memory Function Location
1 0.0005 672752 {main}( ) ..\Currency.php:0
这告诉我第 3 行有错误，我不明白
( ! ) Fatal error: Class 'CurrencyConverter' not found in C:\wamp\www\Currency.php on line 3
Call Stack
# Time Memory Function Location
1 0.0005 672752 {main}( ) ..\Currency.php:0