how to get response of http request - php

Question

[![enter image description here][1]][1]I am trying to get the some tag value but it's showing some error.
Below is the code, please suggest some solution.
This is the method i used for httpGet request.
function httpGet($result15)
{
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$result15);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
$output=curl_exec($ch);
curl_close($ch);
return $output;
}
$result15= httpGet("https://www.googleapis.com/customsearch/v1?key=API_KEY&cx=003255er&q=cancer&num=1&alt=atom");//new cse
echo $result15;
$xml = new DOMDocument();
$xml->loadXML($result15);
foreach( $xml->entry as $entry )
{
echo "URL=".(string)$entry->id.PHP_EOL;
echo "Summary=".(string)$entry->summary.PHP_EOL;
}

Answer 1

You might find the curl request is failing. You need to do a couple of things...
function httpGet($result15)
{
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$result15);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // Add this
$output=curl_exec($ch);
// If this fails, output error.
if ($output === FALSE) {
echo curl_error($ch);
// Not sure what you want to do, but 'exit' will work for now
exit();
}
curl_close($ch);
return $output;
}
This will display an error if the curl request fails. You will need to decide how your going to cope with this. You could return false, and then in your code further down, check this before trying to load it as XML. The code above just stops on errors.
Your next piece of code seems to mix SimpleXML and DOMDocument, you can use SimpleXML if the document structure is fairly straight forward...
$xml = simplexml_load_string($result15);
foreach( $xml->entry as $entry )
{