在 PHP 中提取 JSONP 结果集

Posted 2023-03-03

【中文标题】在 PHP 中提取 JSONP 结果集

【英文标题】：Extract JSONP Resultset in PHP

【发布时间】：2011-07-02 04:19:09

【问题描述】：

我希望能够访问此 url 的返回数据。 我什至可以在 php 中做到这一点吗？

    <?php
    $yahooSS = "http://d.yimg.com/autoc.finance.yahoo.com/autoc?query=yahoo&callback=YAHOO.Finance.SymbolSuggest.ssCallback";

    $yss = fopen($yahooSS,"r");
    ....

我相信这会返回一个 javascript 回调函数，但我不知道从哪里开始。

以下是返回结果集的示例。

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"])

非常感谢任何帮助。

【参考方案1】：

没错，就是JSON with padding.，你必须去掉函数名（和括号），然后你才能用json_decode解析JSON。

我曾经为此写过一个函数：

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);

用法：

$data = jsonp_decode($response);

DEMO

【参考方案2】：

先试试这个，它可能会为您省去麻烦：只需从 URL 中省略 callback 参数。

如果定义了callback，则此Web 服务具有产生JSONP 的相当标准的行为；否则为纯 JSON。试试看：

http://d.yimg.com/autoc.finance.yahoo.com/autoc?query=yahoo&region=us&lang=eng

返回纯 JSON：

"ResultSet":"Query":"yahoo","Result":["symbol":"YHO.HM","name":"YAHOO","exch":"HAM","type":"S","exchDisp":"Hamburg","typeDisp":"Equity","symbol":"YHOO","name":"Yahoo! Inc.","exch":"NAS","type":"S","exchDisp":"NASDAQ","typeDisp":"Equity","symbol":"YAHOY","name":"Yahoo Japan Corporation","exch":"PNK","type":"S","exchDisp":"OTC Markets","typeDisp":"Equity","symbol":"YHOO.MX","name":"Yahoo! Inc.","exch":"MEX","type":"S","exchDisp":"Mexico","typeDisp":"Equity","symbol":"YAHOF","name":"Yahoo Japan Corporation","exch":"PNK","type":"S","exchDisp":"OTC Markets","typeDisp":"Equity","symbol":"YHOO.BA","name":"Yahoo! Inc.","exch":"BUE","type":"S","exchDisp":"Buenos Aires","typeDisp":"Equity","symbol":"YHO.F","name":"YAHOO","exch":"FRA","type":"S","exchDisp":"Frankfurt","typeDisp":"Equity","symbol":"YHO.MU","name":"YAHOO","exch":"MUN","type":"S","exchDisp":"Munich","typeDisp":"Equity","symbol":"YHO.DE","name":"Yahoo! Inc.","exch":"GER","type":"S","exchDisp":"XETRA","typeDisp":"Equity","symbol":"YHOO.F","name":"YAHOO","exch":"FRA","type":"S","exchDisp":"Frankfurt","typeDisp":"Equity"]

http://d.yimg.com/autoc.finance.yahoo.com/autoc?query=yahoo&region=us&lang=eng&callback=YAHOO.Finance.SymbolSuggest.ssCallback

返回 JSONP（JSON 封装在函数调用中）：

YAHOO.Finance.SymbolSuggest.ssCallback("ResultSet":"Query":"yahoo","Result":["symbol":"YHO.HM","name":"YAHOO","exch":"HAM","type":"S","exchDisp":"Hamburg","typeDisp":"Equity","symbol":"YHOO","name":"Yahoo! Inc.","exch":"NAS","type":"S","exchDisp":"NASDAQ","typeDisp":"Equity","symbol":"YAHOY","name":"Yahoo Japan Corporation","exch":"PNK","type":"S","exchDisp":"OTC Markets","typeDisp":"Equity","symbol":"YHOO.MX","name":"Yahoo! Inc.","exch":"MEX","type":"S","exchDisp":"Mexico","typeDisp":"Equity","symbol":"YAHOF","name":"Yahoo Japan Corporation","exch":"PNK","type":"S","exchDisp":"OTC Markets","typeDisp":"Equity","symbol":"YHOO.BA","name":"Yahoo! Inc.","exch":"BUE","type":"S","exchDisp":"Buenos Aires","typeDisp":"Equity","symbol":"YHO.F","name":"YAHOO","exch":"FRA","type":"S","exchDisp":"Frankfurt","typeDisp":"Equity","symbol":"YHO.MU","name":"YAHOO","exch":"MUN","type":"S","exchDisp":"Munich","typeDisp":"Equity","symbol":"YHO.DE","name":"Yahoo! Inc.","exch":"GER","type":"S","exchDisp":"XETRA","typeDisp":"Equity","symbol":"YHOO.F","name":"YAHOO","exch":"FRA","type":"S","exchDisp":"Frankfurt","typeDisp":"Equity"]);