Checking if all the array items are empty PHP

Question

I'm adding an array of items from a form and if all of them are empty, I want to perform some validation and add to an error string. So I have:

$array = array(     'RequestID'       => $_POST["RequestID"],     'ClientName'      => $_POST["ClientName"],     'Username'        => $_POST["Username"],     'RequestAssignee' => $_POST["RequestAssignee"],     'Status'          => $_POST["Status"],     'Priority'        => $_POST["Priority"] ); 

And then if all of the array elements are empty perform:

$error_str .= '<li>Please enter a value into at least one of the fields regarding the request you are searching for.</li>'; 

Answer 1

You can just use the built in array_filter

If no callback is supplied, all entries of input equal to FALSE (see converting to boolean) will be removed.

So can do this in one simple line.

if(!array_filter($array)) {     echo '<li>Please enter a value into at least one of the fields regarding the request you are searching for.</li>'; }