title: Read Json/Array string in Php
body: <p>I have a string which is in valid Json format and it looks like this:</p>
  
  <pre><code>{
      "message": "success",
      "result": {
          "46620": {
              "course_id": "29",
              "en_title": "Google Analytics (Basic)",
              "fa_title": "Ù…Ø¨Ø§Ù†ÛŒ Ú¯ÙˆÚ¯Ù„ Ø¢Ù†Ø§Ù„ÛŒØªÛŒÚ©Ø²",
              "badge_link": "http://www.darsnameh.com/badge/index.php?user=46620&amp;badge="
          },
          "49449": {
              "course_id": "16",
              "en_title": "Multimedia Reporting 1- Reporting in the Internet Age",
              "fa_title": "Ú¯Ø²Ø§Ø±Ø´â€ŒÚ¯Ø±ÛŒ Ú†Ù†Ø¯Ø±Ø³Ø§Ù†Ù‡â€ŒØ§ÛŒ Û±- Ú¯Ø²Ø§Ø±Ø´Ú¯Ø±ÛŒ Ø¯Ø± Ø²Ù…Ø§Ù†Ù‡â€ŒÛŒ Ø§ÙŠÙ†ØªØ±Ù†Øª",
              "badge_link": "http://www.darsnameh.com/badge/index.php?user=49449&amp;badge="
          },
          "55480": {
              "course_id": "33",
              "en_title": "HTML for Journalists and Bloggers",
              "fa_title": "Ø¢Ø´Ù†Ø§ÛŒÛŒ Ø¨Ø§ Ø§Ú†â€ŒØªÛŒâ€ŒØ§Ù…â€ŒØ§Ù„ Ùˆ ÙÙ†Ø§ÙˆØ±ÛŒâ€ŒÙ‡Ø§ÛŒ Ø§ÛŒÙ†ØªØ±Ù†Øª Ø¨Ø±Ø§ÛŒ Ø±ÙˆØ²Ù†Ø§Ù…Ù‡â€ŒÙ†Ú¯Ø§Ø±Ø§Ù† Ùˆ ÙˆØ¨Ù„Ø§Ú¯â€ŒÙ†ÙˆÛŒØ³â€ŒÙ‡Ø§",
              "badge_link": "http://www.darsnameh.com/badge/index.php?user=55480&amp;badge="
          },
          "59250": {
              "course_id": "31",
              "en_title": "Twitter",
              "fa_title": "ØªÙˆÛŒÛŒØªØ±",
              "badge_link": "http://www.darsnameh.com/badge/index.php?user=59250&amp;badge="
          },
          "103716": {
              "course_id": "42",
              "en_title": "How to write a CV?",
              "fa_title": "Ú†Ú¯ÙˆÙ†Ù‡ Ø±Ø²ÙˆÙ…Ù‡ Ø¨Ù†ÙˆÛŒØ³ÛŒÙ…ØŸ",
              "badge_link": "http://www.darsnameh.com/badge/index.php?user=103716&amp;badge="
          }
      }
  }
  </code></pre>
  
  <p>I want to read different fields, for example all fa_titles, I use $obj = json_decode($str, true); to convert this to Json, then echo sizeof($obj['result']); shows me that it has 5 result object, but how can I access to fa_title or en_title fields now?</p>