Not receiving transfer on different host - php

Question

I'm trying to fetch html from a page with curl and php. I have the following code, which works perfectly on my host:
<?php
$curl = curl_init();
$URLs[] = "http://www.stackoverflow.com";
echo request( $curl, $URLs[0] );
function request($curl, $url, $post = null)
{
echo (isset($post) ? 'POST ' . $url : 'GET ' . $url) . PHP_EOL;
try
{
curl_setopt_array($curl, array
(
CURLOPT_RETURNTRANSFER => true,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HEADER => true,
CURLOPT_AUTOREFERER => true,
CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_URL => $url,
CURLOPT_USERAGENT => 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0',
CURLOPT_HTTPHEADER => array
(
'Accept-Language: en-US;q=0.6,en;q=0.4',
'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
)
));
return curl_exec($curl);
}
catch(Exception $exception)
{
echo $exception;
}
}
curl_close($curl);
?>
When I put it on my webhost, I get no response. I checked for curl error and it says 'No Url set!'. Any hints please? Thanks!

Answer 1

try this other format of curl handling, initializing host in curl_init function:
$url = ....
$arrayConfig = ....
$curl = curl_init($url);
curl_setopt_array($curl,$arrayConfig);
$content = curl_exec($curl);
$err = curl_errno($curl);
$errmsg = curl_error($curl) ;
$header = curl_getinfo($curl);
curl_close($curl);