title: Check a PHP array for empty values and fill that particular key's value with default value if empty
body: <p>I have to read a PHP array for empty values. If there are any empty values for any key, I just wanted them to be filled with some default value if empty.</p>
  
  <p><strong>1. Is there any in built function to check if empty in an array and fill it up?</strong> </p>
  
  <p>(OR)</p>
  
  <p><strong>2. What is the procedure to accomplish this requirement?</strong></p>