if( ! function_exists( 'pe_excerpt' ) ) {
	/**
	 * [[Description]]
	 * @param  integer $len Excerpt length (words)
	 * @param  string $trim (...) cut sign
	 * @param  boolean $readmore Show readmore
	 */
	function pe_excerpt($len = 15, $trim = '…', $readmore = false) {
		if($len < 1) return; //if 0 -> disable excerpt
		$limit = $len + 1;
		$excerpt = strip_shortcodes(get_the_content());
		$excerpt = explode(' ', $excerpt, $limit);
		$num_words = count($excerpt);
		if($num_words >= $len) {
			$last_item = array_pop($excerpt);
		}
		else {
			$trim = '';
		}
		$excerpt = implode(' ', $excerpt) . $trim;
		if( $readmore === true ) {
			$excerpt .= pe_read_more_link();
		}
		$excerpt = wp_strip_all_tags($excerpt);
		echo $excerpt;
	}
}