Problems when defining url string whose query string parameter contains the dollar ($) character

Question

I am using a WS API in JSON

that the URL is

https://api.movidesk.com/public/v1/persons?token=52ee6ca5-8639-422b-bafe-470013c11176&$filter=profileType eq 2

which is the example in which the API documentation passes. when game in browser gets

https://api.movidesk.com/public/v1/persons?token=52ee6ca5-8639-422b-bafe-470013c11176&$filter=profileType%20eq%202

But the information appears

My problem is when I will use the PHP API

Example

 <?php $json = file_get_contents("https://api.movidesk.com/public/v1/persons?token=52ee6ca5-8639-422b-bafe-470013c11176&$filter=profileType%20eq%202");
      $cliente = json_decode($json);

returns me the following error

Notice: Undefined variable: filter in C: xampp htdocs Maps json.php on line 54

Warning: file_get_contents(https://api.movidesk.com/public/v1/persons?token=52ee6ca5-8639-422b-bafe-470013c11176&$filter=profiletype%20eq%202): failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error in C: xampp htdocs Maps json.php on line 54

Answer 1

From what I understand, the url parameter has a value called $filter.

In the section where you try to make the request with file_get_contents, you are using double quotes. When you do this, PHP interprets values that start with $ as the variable value.

This happened because you are using double quotes. Just use single quotes that will solve the problem.

$json = file_get_contents('https://api.movidesk.com/public/v1/persons?token=52ee6ca5-8639-422b-bafe-470013c11176&$filter=profileType%20eq%202');

$cliente = json_decode($json);

For more information, read:

Difference between single and double quotes in PHP