What are some potential issues with passing data between frames in PHP?

One potential issue with passing data between frames in PHP is the lack of security measures, as data can be easily manipulated or intercepted. To solve this, you can use session variables to securely pass data between frames. 

// Set data in the parent frame
session_start();
$_SESSION['data'] = "Hello from parent frame";

// Retrieve data in the child frame
session_start();
$data = isset($_SESSION['data']) ? $_SESSION['data'] : "";
echo $data;

Keywords

cross-origin postMessage iframe security serialization

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