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Laravel 8 upper {#collection-method}
2021-07-05 09:43:55 更新
upper 方法将字符串转换为大写：
use Illuminate\Support\Str;
$adjusted = Str::of('laravel')->upper();
// LARAVEL 
upper 方法将字符串转换为大写：
use Illuminate\Support\Str;
$adjusted = Str::of('laravel')->upper();
// LARAVEL