在 PHP 中提取 JSONP 结果集
JSONP 回调是从基于 JavaScript 的 API 返回数据的常见方法。在这种情况下,您有一个这样的端点,它返回以下 JSONP 内容:
YAHOO.Finance.SymbolSuggest.ssCallback({"ResultSet":{"Query":"yahoo","Result":[{"symbol":"YHOO","name": "Yahoo! Inc.","exch": "NMS","type": "S","exchDisp":"NASDAQ","typeDisp":"Equity"},{"symbol":"YAHOY.PK","name": "YAHOO JAPAN CORP","exch": "PNK","type": "S","exchDisp":"Pink Sheets","typeDisp":"Equity"},{"symbol":"ETD","name": "Citigroup Inc. ELKS On Yahoo","exch": "PCX","type": "S","typeDisp":"Equity"},{"symbol":"YOJ.BE","name": "YAHOO JAPAN","exch": "BER","type": "S","exchDisp":"Berlin","typeDisp":"Equity"},{"symbol":"YHO.SG","name": "YAHOO","exch": "STU","type": "S","exchDisp":"Stuttgart","typeDisp":"Equity"},{"symbol":"YAHOF.PK","name": "YAHOO JAPAN CORP","exch": "PNK","type": "S","exchDisp":"Pink Sheets","typeDisp":"Equity"},{"symbol":"YHO.HM","name": "YAHOO","exch": "HAM","type": "S","exchDisp":"Hamburg","typeDisp":"Equity"},{"symbol":"YOJ.DE","name": "YAHOO JAPAN","exch": "GER","type": "S","exchDisp":"XETRA","typeDisp":"Equity"},{"symbol":"YHO.DU","name": "YAHOO","exch": "DUS","type": "S","exchDisp":"Dusseldorf Stock Exchange","typeDisp":"Equity"},{"symbol":"YHOO.BA","name": "YAHOO INC.","exch": "BUE","type": "S","exchDisp":"Buenos Aires","typeDisp":"Equity"}]}})
要从此内容中提取 JSON 数据,您可以使用 jsonp_decode() 函数:
<code class="php">function jsonp_decode($jsonp, $assoc = false) { // PHP 5.3 adds depth as third parameter to json_decode if($jsonp[0] !== '[' && $jsonp[0] !== '{') { // we have JSONP $jsonp = substr($jsonp, strpos($jsonp, '(')); } return json_decode(trim($jsonp,'();'), $assoc); }</code>
使用此函数,您可以按如下方式访问 JSON 数据:
<code class="php">$data = jsonp_decode($response);</code>
$data 变量将包含具有以下结构的对象:
{ "ResultSet": { "Query": "yahoo", "Result": [ { "symbol": "YHOO", "name": "Yahoo! Inc.", "exch": "NMS", "type": "S", "exchDisp": "NASDAQ", "typeDisp": "Equity" }, // ... ] } }
然后您可以访问根据需要的各个数据点。
以上是如何从 PHP 中的 JSONP 回调中提取 JSON 数据?的详细内容。更多信息请关注PHP中文网其他相关文章!