What regular expression is being used in the PHP script to extract dates from folder names?

The regular expression being used in the PHP script to extract dates from folder names is likely something like "/\d{4}-\d{2}-\d{2}/". This regex pattern is looking for strings in the format of "YYYY-MM-DD" within the folder names. To extract dates from folder names using this regular expression, you can use the preg_match function in PHP.

$folder_name = "folder_name_2022-10-15";
$pattern = "/\d{4}-\d{2}-\d{2}/";

if (preg_match($pattern, $folder_name, $matches)) {
    $date = $matches[0];
    echo "Date extracted from folder name: " . $date;
} else {
    echo "No date found in folder name.";
}