[WordPress] Displays up to $length characters of the contents of the current post, taking care not to split words.

gistfile1.php

<?php

function mcsf_the_content( $length ) {
	$content = get_the_content();
	$content = apply_filters( 'the_content', $content );
	$content = wp_filter_nohtml_kses( $content );
	$extra = substr( $content, $length, $length + 20 );
	$content = substr( $content, 0, $length );
	$matches = array();
	echo $content;
	if ( preg_match( '/^( *)([^ ]+)/', $extra, $matches ) )
		echo $matches[1] . $matches[2] . esc_html( ' [&hellip;]' );
}