wordpress custom excerpt

custom function.php and inline.php

<?

function new_excerpt_more( $more ) { return '...'; }
add_filter('excerpt_more', 'new_excerpt_more');

$content = get_the_excerpt();

if (!$content) {
    $content = get_the_content();
    if (strlen($content) > 150) {
        $content = wp_strip_all_tags($content);
        $content = substr($content, 0, 150);
        $content = explode(' ', $content);
        if (count($content) > 1) {
            array_pop($content);
        }
        $content = implode(' ', $content);
        $content .= "...";
    }
}

print $content;