How can PHP developers ensure that HTML code stored in a session variable is displayed correctly on a webpage?

When storing HTML code in a session variable in PHP, developers should ensure that the HTML is properly encoded to prevent any injection attacks and to display it correctly on a webpage. This can be done by using the `htmlspecialchars()` function to encode the HTML before storing it in the session variable. When retrieving the HTML from the session variable to display it on a webpage, developers should use `htmlspecialchars_decode()` to decode the HTML back to its original form. 

// Storing HTML code in a session variable
$html = "<h1>Welcome to our website!</h1>";
$_SESSION['html_content'] = htmlspecialchars($html);

// Displaying HTML code from session variable on a webpage
echo htmlspecialchars_decode($_SESSION['html_content']);

Keywords

PHP session variable HTML code display webpage

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