Curl post submission appears 404

Use Curl to access the authorization Basic Authentication page, which is a successful code

function Postjsondata ($json) {    $ch = curl_init ("Http://localhost/issues.json");    curl_setopt ($ch, Curlopt_customrequest, "POST");//Headers    curl_setopt ($ch, Curlopt_httpheader, Array (        " Authorization:basic Base64 ($username. $password) ",        " Content-type:application/json ",    ));//$filename =" Test.json ";  Change this path to yours//$fd = fopen ($filename, ' R ');//curl_setopt ($ch, Curlopt_upload, TRUE);//curl_setopt ($ch, CU Rlopt_infile, $FD);//curl_setopt ($ch, Curlopt_infilesize, FileSize ($filename));    curl_setopt ($ch, Curlopt_postfields, $json); POST this data//Send synchronously    curl_setopt ($ch, Curlopt_returntransfer, TRUE);    $result = curl_exec ($ch);    Curl_close ($ch);    return $result;}

curl_setopt ($ch, Curlopt_customrequest, "POST"); Modified to curl_setopt ($curl, Curlopt_post, true); After submitting Httpstatus 404, do not know why, record

Curl post submission appears 404