use Illuminate\Support\Str; // Convert a string to camel case. $camelCase = Str::camel('hello_world'); // 'helloWorld' // Convert a string to snake case. $snakeCase = Str::snake('HelloWorld'); // 'hello_world' // Get a substring of a string. $substring = Str::substr('hello world', 3, 5); // 'lo wo' // Limit a string to a certain number of characters. $limited = Str::limit('hello world', 5); // 'hello...' // Generate a random string of a specified length. $random = Str::random(10); // 'c6edaa7a5b'From the examples provided, it can be determined that the `illuminate/support` package is a utility library for Laravel applications.