PHP : How to check if an array is empty ?

In PHP, there are many times when I need to check if the return result array is empty or not. One way of achieving this is to use the empty() function. However, there are times that the supposedly "empty" array is populated by 0 or false and it will cause the empty() to evaluate the array inaccurately.

To ensure that the array is really empty before evaluation. Use the array_filter() function.

 $arr = array();
 $arr = array_filter($arr); 

 if (!empty($arr)) {
 echo "array is not empty";
 echo "empty array";

Hope this short tutorial is helpful.

By Adam Ng

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