evo truncate a long string

truncate.php

/**********Как обрезать длину строки?******************/

[!truncate? &text=[*pagetitle*] &len=200!] // в документе MODx

<?php  
$lenf = $len;
$order   = array("\r\n", "\n", "\r");
$replace = '<br />';
$what  = str_replace($order, $replace, $text);
if (strlen($what) > $lenf) {
  $what = preg_replace('/^(.{' . $lenf . ',}? ).*$/is', '$1', $what) . '...';
}
return $what;
?>