getting PHP Warning in curl_setopt()

Question

I am getting the following PHP Warning curl_setopt() expects parameter 2 to be long string given ,

for

curl_setopt($ch, CURLOPT_PROTOCOLS, CURLPROTO_HTTP);. 

Curl version is 7.19.7

Answer 1

CURLOPT_PROTOCOLS is introduced in PHP version 5.2.10. Check your PHP it should be equal or greater than that.