POST JSON to API and retrieve data with PHP - php

Question

I'm trying to use this API and POST to it with the required parameters.
Using this code:
function postToService_php( $urlAbs, $data ) {
$dataJSON = json_encode($data);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $urlAbs);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $dataJSON);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Content-Length: ' . strlen($dataJSON))
);
$resultJSON = curl_exec($ch);
return $resultJSON;
}
$postData = array(
'UserName' => '*username*',
'Password' => '*password*',
'Area' => 1
);
var_dump(postToService_php('http://e20prodwebapi.esmartapi.com/api/Authenticate', $postData));
This seems to give string(0) "" as a result, what am I doing wrong here?

Answer 1

this API https is required. I don't have account so can't test.
https://e20prodwebapi.esmartapi.com/api/Authenticate

Answer 2

Use this: Consider you have to use SSL for this site (HTTPS)
<?php
function postToService_php( $urlAbs, $data ) {
$dataJSON = json_encode($data);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $urlAbs);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $dataJSON);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_HEADER, 1); //Remove this line if everything works okay.
curl_setopt($ch, CURLOPT_AUTOREFERER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
curl_setopt($ch,CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Content-Length: ' . strlen($dataJSON))
);
$resultJSON = curl_exec($ch);
return $resultJSON;
}
$postData = array(
'UserName' => 'test',
'Password' => 'test',
'Area' => 1
);
var_dump(postToService_php('https://e20prodwebapi.esmartapi.com/api/Authenticate', $postData));

Answer 3

On a hunch I tried https and received the expected 401 response using this code
function postToService_php( $url, $data ) {
$ch = curl_init();
$data=json_encode( $data );
curl_setopt($ch, CURLOPT_URL, $url );
if( parse_url( $url,PHP_URL_SCHEME )=='https' ){
curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, FALSE );
curl_setopt( $ch, CURLOPT_SSL_VERIFYHOST, 2 );
curl_setopt( $ch, CURLOPT_CAINFO, realpath( 'c:/wwwroot/cacert.pem' ) );
}
curl_setopt($ch, CURLOPT_POST, true );
curl_setopt($ch, CURLOPT_POSTFIELDS, $data );
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true );
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Content-Length: ' . strlen( $data ))
);
$result = curl_exec( $ch );
$info=curl_getinfo( $ch );
curl_close( $ch );
return (object)array(
'result'=> $result,
'info' => $info
);
}
$url='https://e20prodwebapi.esmartapi.com/api/Authenticate';
$postData = array(
'UserName' => 'geronimo',
'Password' => 'passthedoobie',
'Area' => 1
);
print_r( postToService_php( $url, $postData ) );