php - curl_multi "Illegal characters found in URL"
A quick search of the cURL source code reveals that this error comes from the fact that the URL being supplied to CURLOPT_URL contains the characters \r and/or \n.
From lib/url.c:
/* We might pass the entire URL into the request so we need to make sure * there are no bad characters in there.*/ if(strpbrk(data->change.url, "\r\n")) { failf(data, "Illegal characters found in URL"); return CURLE_URL_MALFORMAT; }You should run the URL through $url = trim($url); since there is probably a remaining \r or \n on the end of the URL.