Does php curl issue an http GET request or an POST request?

php curl is often used to fetch remote content. Sure you can use file_get_content to fetch remote web pages. But curl has more options to choose. We know that http defines multiple methods to fetch a url such as GET, POST, etc. Do you know which method php curl uses to fetch the content of a url? By default, curl uses GET:

$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, "http://myprogrammingnotes.com");
curl_setopt($curl, CURLOPT_HEADER,1);
curl_setopt($curl, CURLOPT_FRESH_CONNECT,1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER,1);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST,2);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER,false); 
curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
try
{
  $results = curl_exec($curl);
  $info = curl_getinfo($curl);
  if (FALSE === $results)
    throw new Exception(curl_error($curl), curl_errno($curl));
}
catch(Exception $e) {

    trigger_error(sprintf(
  'Curl failed with error #%d: %s',
  $e->getCode(), $e->getMessage()),
  E_USER_ERROR);

}

curl_close($curl);

The first line of the http request curl issues is:

GET / HTTP/1.0

If you want to use POST instead of GET, you should add the following line:

curl_setopt($curl, CURLOPT_POST, TRUE);

Now the first line of the http header of the request would be:

POST / HTTP/1.0

But you do not really need to explicitly set CURLOPT_POST to true to use POST. If you set the CURLOPT_POSTFIELDS option, curl will issue the POST request even CURLOPT_POST is not set or set to false.

Reference:https://stackoverflow.com/questions/1225409/how-to-switch-from-post-to-get-in-php-curl

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