Laravel check empty string

empty($str);

Check empty laravel blade

 @empty($products)
        <p class="bg-danger text-white p-1">product</p>
@else
        <p class="bg-danger text-white p-1">no product</p>
 @endempty

Check null if string laravel

$query->whereRAW("IFNULL(COLUMN_NAME,'') = '' ")

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