attr()

attr(array $attr = null, string $before = null, string $after = null): string|null

Parameters

Name	Type	Default	Description
$attr	`array`	`null`	A list of attributes as key/value array
$before	`string`	`null`	An optional string that will be prepended if the result is not empty
$after	`string`	`null`	An optional string that will be appended if the result is not empty

string|null