How can file existence checks be incorporated into a dynamic menu system to ensure security and prevent errors in PHP?

File existence checks can be incorporated into a dynamic menu system in PHP by checking if the file exists before including it in the menu. This helps ensure security by preventing errors that may occur if the file is missing. To implement this, you can use the `file_exists()` function to check if the file exists before including it in the menu. 

$menuItems = ['home.php', 'about.php', 'contact.php'];

foreach ($menuItems as $menuItem) {
    if (file_exists($menuItem)) {
        echo '<a href="' . $menuItem . '">' . ucfirst(str_replace('.php', '', $menuItem)) . '</a>';
    }
}

Keywords

file existence checks dynamic menu system security errors PHP

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