Error in file_get_contents

[brunocs86]

I have performed a test according to the code below

`<?php

require_once "MoodleRest.php";

$parameters = array('userlist' => array(array('userid' => 13, 'courseid' => 2), array('userid' => 13, 'courseid' => 2)));

$json = (new MoodleRest())->setServerAddress("http://dev.moodle.local/webservice/rest/server.php")->setToken('f0bb33743851adc4c2475240787c07b0')->setReturnFormat(MoodleRest::RETURN_JSON)->request('core_user_get_course_user_profiles', $parameters);

echo $json;`

And I got the following error

Can you help me?

[winduty]

I recommend a tool to test the web services called Postman, with it you can know how to test the functions and determine if you are having any error in the handling of the functions, a problem on the server or a configuration problem of the web service

[winduty]

Personally, I developed this file to handle the functions that I have enabled in my web service to call them from any php file where I am going to use them.

require_once "MoodleRest.php";
class Moodle
{
	private $Moodle;
	private $token;
	function __construct()
	{
		$this->Moodle = new  MoodleRest();
		$this->token = $this->getToken();
	}
	
	//get web service token
	function getToken()
	{
		$url = 'https://url of moodle site/login/token.php?';
		$data = array(
				'username' 		=> 'webservice_user_name', 
				'service'	 	=> 'webservicename',
				'password'	 	=> 'webservice_user_password'
			);		
		$options = array(
		  'http' => array(
		    'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
		    'method'  => 'POST',
		    'content' => http_build_query($data),
		  ),
		);
		$context  = stream_context_create($options);
		$result = file_get_contents($url, false, $context);
		$array = json_decode($result, true);
		return $array['token'];
	}

	//conenction to the web service using the token
	function connection()
	{
		$ip = 'url_of_moodle_site';			
		$this->Moodle->setServerAddress("https://$ip/webservice/rest/server.php");
		$this->Moodle->setToken($this->token);
		return $this->Moodle->setReturnFormat(MoodleRest::RETURN_ARRAY);		 
	}

	/* any enabled function on web service for example core_user_get_users */
	function get_course_profiles($userid,$courseid)
	{				
		if($this->connection()):		
			$info = array
						(
							'userid'			=> $userid,
							'courseid' 		=> $courseid
						);
			$params = array( 'userlist' => array($info));
			$ARRAY = $this->Moodle->request('core_user_get_course_user_profiles', $params);
			return "result2:\n" . print_r($ARRAY, true);				
		else:
			return 0; //or wherever you want
		endif;
	}	
	function GetUserId($username)
	{
		if($this->connection()):		
			$username = array
						( 
							'key' 	=> 'username' ,  
							'value' => $username 
						);
			$params = array( 'criteria' => array($username));
			$ARRAY = $this->Moodle->request('core_user_get_users', $params);				
			return $ARRAY['users'][0]['id'];					
			die();
		else:
			echo "Error de conexion";
		endif;
	}	
	function UserPasswordReset($username,$password)
	{		
		if($this->connection()):		
			$info = array
						(
							'id'			=> $this->GetUserId($username),
							'password' 		=> $password,
							'preferences' 	=> array($preferences = array
												(
													'type' 	=>'auth_forcepasswordchange', 
													'value' => 0
												))
						);
			$params = array( 'users' => array($info));
			$ARRAY = $this->Moodle->request('core_user_update_users', $params);
			//print_r( $this->Moodle->getPrintOnRequest());
			return 1;
		else:
			return 0;
		endif;		
	}

	/* end of function management */
	
}
?>

[winduty]

there is an example of your code https://github.com/llagerlof/MoodleRest/wiki/MoodleRest-examples

[llagerlof]

@brunocs86 Hi Bruno.

I tested your code here, making the necessary changes to my environment and it worked.

Looks like you have a name resolution problem. This can be caused for some reasons.

Please, do this tests:

Try to wget the server.

$ wget http://dev.moodle.local/webservice/rest/server.php -O wget.txt

Open the wget.txt. Should be something like this:

<?xml version="1.0" encoding="UTF-8" ?>
<EXCEPTION class="moodle_exception">
<ERRORCODE>invalidtoken</ERRORCODE>
<MESSAGE>Invalid token - token not found</MESSAGE>
</EXCEPTION>

a. If wget cannot find the host, wget.txt will be empty and you will receive the error wget: unable to resolve host address. In this case the problem it's in your network.

b. If wget find your server, it could be doing some redirection. In this case try using the IP of your Moodle server instead the host name. In setServerAddress() replace the host dev.moodle.local by the IP of your moodle and make the request.

c. If everything fails, just to cover most scenarios, try to wget using the IP instead the hostname.

Please, report the results here so we can find a solution for your case.

[brunocs86]

there is an example of your code https://github.com/llagerlof/MoodleRest/wiki/MoodleRest-examples

thanks for your contribution, it was very enlightening

[brunocs86]

@brunocs86 Hi Bruno.

I tested your code here, making the necessary changes to my environment and it worked.

Looks like you have a name resolution problem. This can be caused for some reasons.

Please, do this tests:

Try to wget the server.

$ wget http://dev.moodle.local/webservice/rest/server.php -O wget.txt

Open the wget.txt. Should be something like this:

<?xml version="1.0" encoding="UTF-8" ?>
<EXCEPTION class="moodle_exception">
<ERRORCODE>invalidtoken</ERRORCODE>
<MESSAGE>Invalid token - token not found</MESSAGE>
</EXCEPTION>

a. If wget cannot find the host, wget.txt will be empty and you will receive the error wget: unable to resolve host address. In this case the problem it's in your network.

b. If wget find your server, it could be doing some redirection. In this case try using the IP of your Moodle server instead the host name. In setServerAddress() replace the host dev.moodle.local by the IP of your moodle and make the request.

c. If everything fails, just to cover most scenarios, try to wget using the IP instead the hostname.

Please, report the results here so we can find a solution for your case.

I will try to carry out your guidelines, thank you very much for helping me.

[llagerlof]

Due to inactivity, and because I am assuming that the author of this issue must have already solved it, I am closing this thread.