title: PHP Add double quotes before and after numbers in json string
body: <p>I'm trying to add double quotes to numbers in a json string. For example:</p>
  
  <p><code>{"id":1, "result": 288230376201306378}</code></p>
  
  <p>Should be:</p>
  
  <p><code>{"id":1, "result": "288230376201306378"}</code></p>
  
  <p>How do I achieve this? I read somewhere that I'm supposed to use regular expressions. Unfortunately, I'm kinda new to that.</p>
  
  <p>Also, I would be very grateful if you could point me to some online resources which would help me understand regex.</p>
  
  <p>Thanks.</p>