rface' ] );
	}


	/**
	 * Get excerpt from string
	 *
	 * @param String $str String to get an excerpt from
	 * @param Integer $startPos Position int string to start excerpt from
	 * @param Integer $maxLength Maximum length the excerpt may be
	 *
	 * @return String excerpt
	 */
	public
	function getExcerpt(
		$str, $startPos = 0, $maxLength = 100
	) {
		if ( strlen( $str ) > $maxLength ) {
			$excerpt   = substr( $str, $startPos, $maxLength - 3 );
			$lastSpace = strrpos( $excerpt, ' ' );
			$excerpt   = substr( $excerpt, 0, $lastSpace );
			$excerpt   .= '...';
		} else {
			$excerpt = $str;
		}

		return $excerpt;
	}

	/**
	 * @param array $arr1
	 * @param array $arr2
	 *
	 * @return array
	 */
	protected
	function array_merge(
		array $arr1, array $arr2
	) {
		if ( ! empty( $arr2 ) ) {
			foreach ( $arr2 as $key => $value ) {
				if ( ! isset( $arr1[ $key ] ) ) {
					$arr1[ $key ] = $value;
				} else if ( is_array( $arr1[ $key ] ) ) {
					$arr1[ $key ] = $arr1[ $key ] + $value;
				}
			}
		}

		return $arr1;
	}
}