是null等于''

Question

I using this code

$dato = array_shift($datos);
while($dato!=''){...}

Is it correct?

Is the same to put:

while($dato!=''){...}

Than

while($dato!=null){...}

Edit: This is on the oficial documentation php

Returns the shifted value, or NULL if array is empty or is not an array.

But my code is actually running

Answer 1

I think you are trying to check the value is empty in any array

while(!empty($dato)){...}