How can the glob() function be used to create a whitelist of HTML files for validation in PHP?

To create a whitelist of HTML files for validation in PHP using the glob() function, you can first define an array of allowed file extensions (e.g., .html, .htm). Then, use glob() to scan a directory and filter out any files that do not match the allowed extensions. This way, you can ensure that only HTML files are included in the whitelist for validation. 

$allowed_extensions = array('html', 'htm');
$files = glob('path/to/directory/*.html');

foreach ($files as $file) {
    $file_info = pathinfo($file);
    if (!in_array(strtolower($file_info['extension']), $allowed_extensions)) {
        // File is not allowed, handle accordingly (e.g., skip or log)
    } else {
        // File is allowed, proceed with validation
    }
}

Keywords

glob function whitelist HTML files validation PHP

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