What potential issue could arise when using arrays to store session data in PHP?

One potential issue that could arise when using arrays to store session data in PHP is the risk of data loss or corruption if the array becomes too large or complex. To solve this issue, you can serialize the array before storing it in the session and unserialize it when retrieving it.

// Serialize the array before storing it in the session
$_SESSION['data'] = serialize($yourArray);

// Unserialize the array when retrieving it from the session
$yourArray = unserialize($_SESSION['data']);