Return data from a URL with Query String

Question

There is a service that needs to send data via query string and it gives me a JSON return, however, I am not getting this return, it does not send the query string.

$url = 'https://www.servico.com.br?nome=abc&cpf=abc&cep=abc'

Having the variable $url I tried it from the forms below:

$dataReturn = file_get_contents($url);
//Retorna uma mensagem de erro dizendo que os parâmetros não foram passados.
//Como se tivesse enviado apenas: www.servico.com.br

$dataReturn = readfile($url);
//Retorna uma mensagem de erro dizendo que os parâmetros não foram passados.
//Como se tivesse enviado apenas: www.servico.com.br

$dataReturn = new SoapClient($url); // Essa foi no desespero
//Retorna uma mensagem de erro dizendo que não é um wsdl

$dataReturm = Response::json($url);
//Também dá erro. :(

Any suggestions to return the data???

Answer 1

Try using file_get_contents() with HTTP Context Options

$getdata = http_build_query(
  [
    'nome' => 'abc',
    'cpf' => 'abc'
  ]
);

$opts = array('https' =>
    array(
        'method'  => 'GET',
        'header'  => 'Content-type: application/x-www-form-urlencoded',
        'content' => $getdata
    )
);

$context  = stream_context_create($opts);

$result = file_get_contents('https://www.servico.com.br', false, $context);

Answer 2

Well technically the "file_get_contents" function already contemplates sending urls with built-in query strings, so what I can think is that the error is on your server or more likely on the server you receive, such as "user_agent" blocking, IP blocking, header blocking, and more.

Test Your Server
Well to test your server you can create 2 simple files, one that receives and the other that sends, and display this data on the screen, this may indicate that your server is working properly ... as the example below:

[ Sends ]

<?php
var_dump(file_get_contents("http://seuserver.com.br/recebe.php?nome=abc&cpf=abc&cep=abc"));
?>

[ Receives ]

<?php
print_r($_GET);
?>

If you can view the data you sent then it falls in the second case, that the server you receive has some restriction ... the most common is the "user_agent" or poorly formatted header, then you can simulate an "agent", because many servers block to precisely not be accessed by robots, so using the answers of colleagues, would be more or less like this:

[ Sends ]

<?php
 $opts = array(
  "http" => array(
   "method" => "GET",
   "user_agent" => "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.97 Safari/537.36"
 )
);
$context  = stream_context_create($opts);
$response = file_get_contents("http://seuserver.com.br/recebe.php?nome=abc&cpf=abc&cep=abc", false, $context);
var_dump($response);
?>

[ Receives ]

<?php
 print_r($_GET);
 echo "\r\n";
 echo $_SERVER["HTTP_USER_AGENT"];
?>

Finally if this solution does not solve I advise starting for something more elaborate as using the extension Curl or make your own HTTP connection module using fsockopen.

Answer 3

Try with CURL, use this code:

$url = 'https://www.servico.com.br'

$querydata = array(
    'nome' => 'abc',
    'cpf' => 'abc',
    'cep' => 'abc'
);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($querydata));
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/json'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$jsonResult = curl_exec($ch);
curl_close($ch);

echo $jsonResult;

Answer 4

RESOLVED

Guys, thank you so much for all the answers. However, I managed to solve the problem very simply. And so:

$handle = fopen($url, 'r');
flock($handle, LOCK_SH);
$result = file_get_contents($url);
fclose($handle);

TIP

It is worth remembering that this way serves for multiple requests, just put inside a loop, as I did also as follows:

foreach ($urls as $url) {
    $handle = fopen($url, 'r');
    flock($handle, LOCK_SH);
    $result[] = file_get_contents($url);
    fclose($handle);
}

Here’s a tip for those who need it too!!!