# find ```php find ( string $selector [, int $idx = null [, bool $lowercase = false ]] ) : mixed ``` Finds elements in the DOM. | Parameter | Description | --------- | ----------- | `selector` | A [CSS style selector](/manual/selectors). | `idx` | Index of the element to return. | `lowercase` | Matches tag names case insensitive when enabled. Returns an array of matches or a single element if `idx` is defined.