What are the potential pitfalls of using array() to create a new array in PHP sessions?

When using `array()` to create a new array in PHP sessions, the potential pitfall is that it may overwrite the existing session data with the new array. To avoid this issue, you should merge the new array with the existing session data using the `array_merge()` function. 

// Start the session
session_start();

// Create a new array
$newArray = array('key1' => 'value1', 'key2' => 'value2');

// Merge the new array with existing session data
if(isset($_SESSION['data'])){
    $_SESSION['data'] = array_merge($_SESSION['data'], $newArray);
} else {
    $_SESSION['data'] = $newArray;
}

Keywords

array() PHP sessions data loss serialization security

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