What are the limitations of using PHP to detect user plugins, such as QuickTime or Flash, on a website?

When using PHP to detect user plugins like QuickTime or Flash on a website, the limitations include the inability to reliably detect all plugins due to browser inconsistencies and security restrictions. A more robust solution would be to use JavaScript to detect plugins on the client-side, as it provides more accurate results and better compatibility across different browsers. 

// PHP code to detect user plugins (limited approach)
$plugins = get_loaded_extensions();
foreach ($plugins as $plugin) {
    echo $plugin . "<br>";
}

Keywords

PHP user plugins limitations detection website

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