Function for custom content / excerpt lengths by using "echo excerpt(20);" or "echo content(20);"

custom-excerpts-front-end.php

<?php echo excerpt(20); ?>

<?php echo content(20); ?>

custom-excerpts-function.php

// function for custom content / excerpt lengths "echo excerpt(20);" or "echo content(20);"
function excerpt($limit) {
$excerpt = explode(' ', get_the_excerpt(), $limit);
	if (count($excerpt)>=$limit) {
	array_pop($excerpt);
	$excerpt = implode(" ",$excerpt).'...';
	} else {
	$excerpt = implode(" ",$excerpt);
	} 
	$excerpt = preg_replace('`\[[^\]]*\]`','',$excerpt);
	return $excerpt;
}

function content($limit) {
	$content = explode(' ', get_the_content(), $limit);
	if (count($content)>=$limit) {
	array_pop($content);
	$content = implode(" ",$content).'...';
	} else {
	$content = implode(" ",$content);
	} 
	$content = preg_replace('/\[.+\]/','', $content);
	$content = apply_filters('the_content', $content); 
	$content = str_replace(']]>', ']]>', $content);
	return $content;
}