通过Yahoo Finance API获取股票数据

http://www.lfyzjck.com/yahoo-finance-api/

最近要做的一个网站需要在首页显示世界各大股票交易场所的综合指数，于是搜集了点这方面的资料，今天把研究的结果放出来。

提供财经方面讯息，做的比较好的应该是Google财经和Yahoo财经了，综合考虑还是Yahoo的接口比较好用

API使用方法比较简单，举个例子：

http://finance.yahoo.com/d/quotes.csv?s=^XAU&f=snd1l1c6

返回数据：

”^XAU”,”PHLX Gold/Silver “,”11/24/2010″,213.51,”+1.01″

很典型的CSV数据，比较好处理。“s”指的是股票的代码（Symbol），“f”是要获取的数据选项，上面例子返回的数据分别是“代码”，“股票名称”，“最后更新时间”，“指数”，“变动”。完整的参数列表参见下面表格（对财经方面知道不多，所以不翻译了，以免误导别人）：

a	Ask	a2	Average Daily Volume	a5	Ask Size
b	Bid	b2	Ask (Real-time)	b3	Bid (Real-time)
b4	Book Value	b6	Bid Size	c	Change & Percent Change
c1	Change	c3	Commission	c6	Change (Real-time)
c8	After Hours Change (Real-time)	d	Dividend/Share	d1	Last Trade Date
d2	Trade Date	e	Earnings/Share	e1	Error Indication (returned for symbol changed / invalid)
e7	EPS Estimate Current Year	e8	EPS Estimate Next Year	e9	EPS Estimate Next Quarter
f6	Float Shares	g	Day’s Low	h	Day’s High
j	52-week Low	k	52-week High	g1	Holdings Gain Percent
g3	Annualized Gain	g4	Holdings Gain	g5	Holdings Gain Percent (Real-time)
g6	Holdings Gain (Real-time)	i	More Info	i5	Order Book (Real-time)
j1	Market Capitalization	j3	Market Cap (Real-time)	j4	EBITDA
j5	Change From 52-week Low	j6	Percent Change From 52-week Low	k1	Last Trade (Real-time) With Time
k2	Change Percent (Real-time)	k3	Last Trade Size	k4	Change From 52-week High
k5	Percebt Change From 52-week High	l	Last Trade (With Time)	l1	Last Trade (Price Only)
l2	High Limit	l3	Low Limit	m	Day’s Range
m2	Day’s Range (Real-time)	m3	50-day Moving Average	m4	200-day Moving Average
m5	Change From 200-day Moving Average	m6	Percent Change From 200-day Moving Average	m7	Change From 50-day Moving Average
m8	Percent Change From 50-day Moving Average	n	Name 股票名称	n4	Notes
o	Open	p	Previous Close	p1	Price Paid
p2	Change in Percent	p5	Price/Sales	p6	Price/Book
q	Ex-Dividend Date	r	P/E Ratio	r1	Dividend Pay Date
r2	P/E Ratio (Real-time)	r5	PEG Ratio	r6	Price/EPS Estimate Current Year
r7	Price/EPS Estimate Next Year	s	Symbol 股票代码	s1	Shares Owned
s7	Short Ratio	t1	Last Trade Time	t6	Trade Links
t7	Ticker Trend	t8	1 yr Target Price	v	Volume
v1	Holdings Value	v7	Holdings Value (Real-time)	w	52-week Range
w1	Day’s Value Change	w4	Day’s Value Change (Real-time)	x	Stock Exchange
y	Dividend Yield

上面接口虽然好用，不过根据项目需求，在进行了进一步封装，自己写了个Widget类，方便在模板里调用

class FinanceWidget
{
    public $stocks = array();
    public $htmlOptions = array();
    public $data = array();
    
    
    public function __construct($data = array(),$htmlOptions = array()){
        $this->stocks = $data;
        $this->htmlOptions = $htmlOptions;
    }
    
    /**
     * 渲染ul标签的开始部分
     * @param array $htmlOptions
     */
    private function _renderHead($htmlOptions){
        $options = '';
        foreach($htmlOptions as $option => $value){
            $options .= "$option=\"$value\" ";
        }
        echo "
  
  
\n"
   
   ;
   
   
    
   
   }
   
   
    
    
   
   /**
     * 渲染主体部分
     */
   
   
    
   
   private
   
    
   
   function
   
    _renderBody
   
   (
   
   $data
   
   ){
   
   
        
   
   foreach
   
   (
   
   $data 
   
   as
   
    $row
   
   ){
   
   
            echo 
   
   '
   
   
'.$row[3].''.$row[1].''.$row[2].''."\n";
        }
    }
    
    /**
     * 渲染ul的结束标签
     */
    private function _renderFoot(){
        echo "
\n";
    }
    
    /**
     * 返回请求的API
     */
    private function getAPI(){
        $IDs = join(',',$this->stocks);
        return "http://finance.yahoo.com/d/quotes.csv?s=$IDs&f=nl1p2";
    }
    
    /**
     * 执行渲染
     */
    public function run(){
        $this->getStocks();
        $this->_renderHead($this->htmlOptions);
        $this->_renderBody($this->data);
        $this->_renderFoot();
    }
    
    /**
     * 获取股票数据
     */
    public function getStocks(){
        $row = 0;
        $stocks_name = array_keys($this->stocks);
        if (($handle = fopen($this->getAPI(), 'r')) !== FALSE) {
            while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
                array_push($data,$stocks_name[$row]);
                array_push($this->data,$data);
                $row++;
            }
            fclose($handle);
        }
    }
}

调用的时候只需要定义你需要展示的股票，传给FinanceWidget类：

$stock = array(
    '上证指数'=>'000001.ss',
    '深圳成指'=>'399001.sz',
    '香港恒生'=>'0011.hk',
    '日经指数'=>'^N225',
    '英国FTSE'=>'^FTSE',
    '法国CAC'=>'^FCHI',
    '德国DAX'=>'^GDAXI',
    '纳斯达克'=>'^IXIC',
    '道琼指数'=>'INDU',
);
$widget = new FinanceWidget($metals);
$widget->run();

输出结果如下：

• XAU指数213.51+0.48%
• HUI指数548.979+0.01%
• JSE黄金2701.89+0.11%
• GOX指数246.62+0.31%
• TSX指数411.840.00%

当然这个类支持指定ul的html选项，作为第二个参数传递给Widget类即可，这里不多介绍，大家根据自己需要扩展即可