title: issue to send authorization token in header in ionic 3 angular 5
body: <p>Can you provide a demo to send authorization token in request header and get that token in php file?</p>
  
  <p>I am using get method for request but it will call OPTIONS method.</p>
  
  <p>Here is My code:</p>
  
  <pre><code>getData()
  {
      let hdrs = new HttpHeaders();
      hdrs.set('Authorization',"token");
      return this.http.get(apiUrl,{ headers : hdrs});
  }
  </code></pre>