How can PHP version differences, such as the removal of Magic_Quotes in PHP 5.4, impact the functionality of code that relies on certain features?

PHP version differences can impact the functionality of code that relies on certain features by causing deprecated functions or removed features to no longer work as expected. To solve this issue, developers should update their code to use alternative functions or methods that are supported in the newer PHP versions. This ensures that the code remains compatible and functional across different PHP versions. 

// Example of fixing code that relies on Magic_Quotes in PHP 5.4+
if (get_magic_quotes_gpc()) {
    function stripslashes_deep($value) {
        $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value);
        return $value;
    }
    $_POST = array_map('stripslashes_deep', $_POST);
    $_GET = array_map('stripslashes_deep', $_GET);
    $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
    $_REQUEST = array_map('stripslashes_deep', $_REQUEST);
}

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