file_get_contents(): Content-type not specified assuming application/x-www-form-urlencoded

Question

i have a project by php and javascript... I have a Call an API from Camera by Php code. I used (file_get_contents) function and Post request: this Code:

$value = $_POST['TakeNewPic'];

function Takepic(){
    $Parametrs = $value;
    $opts = array(
       
  
      "user" => "THETAYN10113693",
     "password" => "10113693",
     "name" => $Parametrs
  
     );

  $post = json_encode($opts);              
$context  = stream_context_create(array(
'http' => array(

    'method' => "POST",
    'timeout' => 60,
    'content' => $post,
    'header'  => "Content-Type : application/json"



   )

));
$url = 'http://192.168.1.1/osc/commands/execute';//.$https_server;
$result = file_get_contents($url,false, $context);


echo json_encode($result);

//}

}

this code is working and Camera take picture but problem is that I alway get this Notice:

Notice: file_get_contents(): Content-type not specified assuming application/x-www-form-urlencoded in C:\xampp7.3\htdocs\CameraTest\function.php on line 63

And I send Values to php file by Ajax Call from Java Script File this is code in Java script file:

 function getCamInfo(value) { var body = "TakeNewPic=" + value; var req = new XMLHttpRequest(); req.onreadystatechange = function () { if(this.readyState === 4 && this.status === 200){ var res = document.getElementById("parg"); res.innerHTML =this.responseText; } } req.open ( "POST", "post_req.php", true, ); req.setRequestHeader( "content-type", "application/x-www-form-urlencoded" ); req.send(body); } document.getElementById("butt").onclick = function () { getCamInfo("camera.takePicture"); //console.log(AllInfo); }

please i want no more get this Notice I hope your help and thanks so much

Answer 1

Looking at the implementation (eg PHP 7.4.0 , PHP 8.1.0 ), it looks like the header won't be detected if there is a space between the header name and the colon. This is possibly a bug, but one that's easy to work around - instead of:

'header'  => "Content-Type : application/json"

Try:

'header'  => "Content-Type: application/json"

Answer 2

Edit your header in PHP, change the Content-type from application/json to application/x-www-form-urlencoded . So your code should be:

...
'timeout' => 60,
'content' => $post,
'header'  => "Content-Type: application/x-www-form-urlencoded"
...