I use Froala editor for upload
But in this line error :
'The Froala Editor SDK library requires the ' . $ext . ' extension.'
Code :
require_once 'editor/lib/FroalaEditor.php';
try {
$response = FroalaEditor_Image::upload('/upload/');
echo stripslashes(json_encode($response));
} catch (Exception $e) {
http_response_code(404);
}