当我的数组只包含一个值时，它不会被识别为数组

Question

In my code, I fill an array using this line in a loop :

 $_SESSION['my_array'][] = $some_value;

After each execution of this line, I do some check (doesn't matter here for which purpose) using the function in_array(). However, at the first iteration it says :

« in_array() expects parameter 2 to be array ».

How to fix this problem?

Answer 1

You can initialize the array (before you fill it with values) like this:

$_SESSION['my_array']=array();

This way you can be sure that it is array, even when it would be empty.