when CURLOPT_HTTPHEADER need 'Content-Length'

Question

I have this code in the client side of my application:

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, \"GET\"); 
curl_setopt($ch, CURLOPT_RETURNT         


        

Answer 1

If you use http PUT with curl then you have to specify the Content-Length header. Otherwise it is automatically handled by the curl for both GET and POST.

For example if you are posting the following data with curl with CURLOPT_POSTFIELDS. Then curl will automatically add the length of the data with the header.

$data = "name=alex&email=none!";
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

For better understand, run your curl code using verbose mode and you'll see how its handling the requests and responses.

curl_setopt($ch, CURLOPT_VERBOSE, true);