# prepare (protected) ```php prepare ( string $str [, bool $lowercase = true [, string $defaultBRText = DEFAULT_BR_TEXT [, string $defaultSpanText = DEFAULT_SPAN_TEXT ]]] ) ``` Initializes the DOM object. | Parameters | Description | ---------- | ----------- | `str` | The HTML document string. | `lowercase` | Tag names are parsed in lowercase letters if enabled. | `defaultBRText` | Defines the default text to return for `
` elements. | `defaultSpanText` | Defines the default text to return for `` elements.