What potential pitfalls should be considered when using PHP to randomly select CSS files for a website?

One potential pitfall when using PHP to randomly select CSS files for a website is ensuring that the selected CSS file exists in the specified directory. To avoid errors, it's important to validate the existence of the selected CSS file before including it in the HTML. This can be achieved by using PHP's file_exists() function to check if the file exists before including it. 

$css_files = ['style1.css', 'style2.css', 'style3.css']; // Array of CSS files
$random_css = $css_files[array_rand($css_files)]; // Select a random CSS file

if (file_exists($random_css)) {
    echo '<link rel="stylesheet" type="text/css" href="' . $random_css . '">';
} else {
    echo 'Error: CSS file not found';
}

Keywords

PHP random selection CSS files website potential pitfalls

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