PHP cURL 不发送发布数据

Question

I have this code:

$obj = $_POST["myData"];
     
$curl = curl_init();
$url = "whatever";
curl_setopt_array($curl, array(
    CURLOPT_URL => $url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => "",
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => "POST",
    CURLOPT_POSTFIELDS => $obj,
    CURLOPT_HTTPHEADER => array(
      "Content-Type: application/json"
    ),
));
      
$response = curl_exec($curl);

The problem is that the curl does not send the request, unless I change the CURLOPT_POSTFIELDS => $obj , for the entire string which is:

{\"desSucursal\":\"423423\",
 \"indPlacas\":\"S\",
 \"horarios\":[],
 \"idConvenio\":{\"idConvenio\":\"1262\"},
 \"usrRegistro\":\"1645144\",
 \"usuarioJefe\":{\"idUsuario\":\"1645534\"}
}

But the var $obj, has the same data, cause $_POST["myData"], is a variable post that it was sent from JS.

Does anybody know, what is the reason that if I put the entire string works, but if I put the variable which contains the same string doesn't work?

Answer 1

Looks like there are extra slashes in your $_POST["myData"] variable. You need to remove those:

$obj = stripslashes($_POST["myData"]);

Note that you need to validate and sanitize any values you're getting from $_POST . You should not trust any incoming data as this is an open door for vulnerabilities.