Handling cURL error inside a function? - php

Question

I've seen the documentation, and several tutorials. However I can't get my code work handling errors. I just want to print "Error.", whatever error is.
Here's my code without handling error,
function get_data($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
$page = get_data('http://....');
$doc = new DOMDocument();
#$doc->loadHTML($page);
echo $doc->saveHTML();
EDIT: The next one prints the default error message, but not mine.
function get_data($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
$data = curl_exec($ch);
if($data === FALSE) {
$msg = curl_error($ch);
curl_close($ch);
throw new Exception($msg);
}
curl_close($ch);
return $data;
}
try {
$page = get_data('wrong-url');
$doc = new DOMDocument();
#$doc->loadHTML($page);
$div = $doc->getElementById('cuerpo');
echo $doc->saveHTML($div);
} catch (Exception $e) {
echo 'Error ', $e->getMessage();
}

Answer 1

curl_exec() will return false on errors. You can throw an Exception in this case:
function get_data($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
$data = curl_exec($ch);
if($data === FALSE) {
$msg = curl_error($ch);
curl_close($ch);
throw new Exception($msg);
}
curl_close($ch);
return $data;
}