register_modifier(), unregister_modifier().
也可参考register_modifier(), unregister_modifier().

Example 16-3. simple modifier plugin简单修正器插件 This plugin basically aliases one of the built-in PHP functions. It does not have any additional parameters. 这个插件主要目的是用另一个名字替换一个内置PHP函数的名字。他没有任何多余的参数。 <?php /* * smarty plugin * ------------------------------------------------------------- * File: modifier.capitalize.php * Type: modifier * Name: capitalize * Purpose: capitalize words in the string * ------------------------------------------------------------- */ function smarty_modifier_capitalize($string) { return ucwords($string); } ?>

Example 16-4. more complex modifier plugin更加复杂的修正器插件 <?php /* * Smarty plugin * ------------------------------------------------------------- * File: modifier.truncate.php * Type: modifier * Name: truncate * Purpose: Truncate a string to a certain length if necessary, * optionally splitting in the middle of a word, and * appending the $etc string. * ------------------------------------------------------------- */ function smarty_modifier_truncate($string, $length = 80, $etc = '...', $break_words = false) { if ($length == 0) return ''; if (strlen($string) > $length) { $length -= strlen($etc); $fragment = substr($string, 0, $length+1); if ($break_words) $fragment = substr($fragment, 0, -1); else $fragment = preg_replace('/\s+(\S+)?$/', '', $fragment); return $fragment.$etc; } else return $string; } ?>