What is the function uniqid() in PHP and how can it be utilized for generating unique strings?

The uniqid() function in PHP generates a unique identifier based on the current time in microseconds. This function can be utilized to create unique strings for various purposes such as generating unique filenames, session IDs, or tracking identifiers. By using uniqid(), you can ensure that the generated strings are unique within a given system.

// Generate a unique string using uniqid()
$uniqueString = uniqid();
echo $uniqueString;