How to Extract JSONP Resultset in PHP with jsonp_decode()?

Extracting JSONP Resultset in PHP: Decoding with jsonp_decode()

To access the returned data from a URL like the one you provided, you can utilize PHP's jsonp_decode() function to extract the JSONP resultset. JSONP is a format that embeds JSON data within a JavaScript function call.

Implementation:

1. Strip the Function Name: Remove the function name (and parentheses) surrounding the JSON data.

2. Use jsonp_decode() Function: Parse the extracted JSON data using jsonp_decode(). The syntax is:

   <code class="php">$data = jsonp_decode($jsonString, $assoc = false);</code>

Custom jsonp_decode() Function:

The following custom jsonp_decode() function can handle JSONP responses:

<code class="php">function jsonp_decode($jsonp, $assoc = false) { 
    if($jsonp[0] !== '[' &amp;&amp; $jsonp[0] !== '{') { // we have JSONP
       $jsonp = substr($jsonp, strpos($jsonp, '('));
    }
    return json_decode(trim($jsonp,'();'), $assoc);
}</code>

Usage:

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

$yss = fopen($yahooSS,"r");
$data = jsonp_decode($response);

// Accessing the result 
foreach ($data->ResultSet->Result as $result) {
    echo $result->symbol . " - " . $result->name . "\n";
}</code>

DEMO:

This example demonstrates how to retrieve and display the suggested symbols and names from the Yahoo Finance Symbol Suggest API:

<code class="php"><?php

// Get JSONP response
$yahooSS = "http://d.yimg.com/autoc.finance.yahoo.com/autoc?query=yahoo&callback=YAHOO.Finance.SymbolSuggest.ssCallback";
$result = file_get_contents($yahooSS);

// Decode JSONP
$data = jsonp_decode($result);

// Process results
echo "<table>";
echo "<tr><th>Symbol</th><th>Name</th></tr>";
foreach ($data->ResultSet->Result as $result) {
    echo "<tr><td>" . $result->symbol . "</td><td>" . $result->name . "</td></tr>";
}
echo "</table>";

?></code>

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