title: How to remove null values from an array?
body: <p>I have an array</p>
  
  <p>Array ( [0] => 0 [1] => [2] => 3 [3] => ) </p>
  
  <p>i want to remove null values from this and the result should be like this</p>
  
  <p>Array ( [0] => 0 [1] => 3) 
  i don't want to remove 0 value from array.</p>