``` // 将 UTF-8 的值直译为 ASCII 类型的值 Str::ascii($value) Str::camel($value) Str::contains($haystack, $needle) Str::endsWith($haystack, $needles) Str::finish($value, $cap) //方法将指定的字符串修改为以指定的值结尾的形式： Str::is($pattern, $value) Str::length($value) Str::limit($value, $limit = 100, $end = '...') Str::lower($value) Str::words($value, $words = 100, $end = '...') Str::plural($value, $count = 2) // 生成更加真实的 "随机" 字母数字字符串. Str::random($length = 16) // 生成一个 "随机" 字母数字字符串. Str::quickRandom($length = 16) Str::upper($value) Str::title($value) Str::singular($value) Str::slug($title, $separator = '-') Str::snake($value, $delimiter = '_') Str::startsWith($haystack, $needles) Str::studly($value) Str::macro($name, $macro) ```