我一直在使用Google财经API成功收集一些股票信息。问题是,在调用http://www.google.com/finance/info?infotype=infoquoteall&q=[$tickerSymbol]
之后,Google返回的JSON在其之前添加了//
,因此无法使用PHP的json_encode()
对字符串进行编码。 JSONLint JSON Validator确认//
无效。显而易见的解决方法是从JSON的开头剥去斜杠。尽管如此,我还是想知道谷歌为什么要向它返回的JSON添加斜杠。额外的斜杠背后有什么目的吗?当其他语言忽略多余的字符时,这是PHP json_encode()
的怪癖吗?我做错了吗?
以下是带有前导斜杠的http://www.google.com/finance/info?infotype=infoquoteall&q=AAPL
请求结果示例。
// [ {
"id": "22144"
,"t" : "AAPL"
,"e" : "NASDAQ"
,"l" : "340.65"
,"l_cur" : "340.65"
,"ltt":"4:00PM EST"
,"lt" : "Jan 18, 4:00PM EST"
,"c" : "-7.83"
,"cp" : "-2.25"
,"ccol" : "chr"
,"el": "345.20"
,"el_cur": "345.20"
,"elt" : "Jan 18, 5:45PM EST"
,"ec" : "+4.55"
,"ecp" : "1.34"
,"eccol" : "chg"
,"div" : ""
,"yld" : ""
,"eo" : ""
,"delay": ""
,"op" : "327.05"
,"hi" : "344.76"
,"lo" : "326.00"
,"vo" : "66.34M"
,"avvo" : "11.28M"
,"hi52" : "348.48"
,"lo52" : "190.25"
,"mc" : "313.75B"
,"pe" : "22.49"
,"fwpe" : ""
,"beta" : "1.38"
,"eps" : "15.15"
,"name" : "Apple Inc."
,"type" : "Company"
}
]
答案 0 :(得分:5)
对于那些寻找现成答案的人来说,这是PHP的一个工作示例;清理JSON并将其转换为对象。可以轻松提取值。
第二个是让它更加精彩,当访问页面时,它会向PubNub频道发送推送消息(cron是你的朋友)。 PubNub消息可以通过javascript轻松接收,因此直播...
<?php
//Obtain Quote Info
$quote = file_get_contents('http://finance.google.com/finance/info?client=ig&q=INDEXDB:DAX');
//Remove CR's from ouput - make it one line
$json = str_replace("\n", "", $quote);
//Remove //, [ and ] to build qualified string
$data = substr($json, 4, strlen($json) -5);
//decode JSON data
$json_output = json_decode(utf8_decode($data));
// get the last price
$last = $json_output->l;
//Output Stock price .
echo 'DAX: ' . $last;
//////////////////////////////
// send it through pubnub //
//////////////////////////////
require_once('Pubnub.php');
// Publish and Subscribe Keys
$publish_key = 'demo';
$subscribe_key = 'demo';
$subscribe_key = false;
// Create Pubnub Object
$pubnub = new Pubnub( $publish_key, $subscribe_key, $secret_key );
// Publish !
$channel = 'quoteTheDax';
$timestamp = $pubnub->time();
$pubish_success = $pubnub->publish(array(
'channel' => $channel,
'message' => array("last" => $last2, "ts" => $timestamp)
));
//Boom its send to ppl subscribed to this channel arround the world
?>
当然,如果你需要一些实时更新,有更好的选择。我只想每30分钟/ 60分钟更新一次。
答案 1 :(得分:2)
我想这是因为Google不希望您使用该JSON,他们建议您使用Google Data API。