smarttemplate_extension_clearhtml.php

这些都是我以前学习是用到的源码

<?php

	/**
	* SmartTemplate Extension
	* urlencode
	*/
	function smarttemplate_extension_clearhtml ( $param , $length = "" )
	{
		$string = trim(strip_tags($param));
		if($length != "") {
			if (strlen($string) > $length) {
				$a = 0;
				for($i = 0; $i < $length; $i++) {
					if (ord($string[$i]) > 128) $a++;
				}
				if ($a % 2 == 0) {
					$str = substr($string, 0, $length) . "..";
				} else {
					$str = substr($string, 0, $length + 1) . "..";
				}
				Return $str;
			} else {
				Return $string;
			}
		}else {
			Return $string;
		}
	}
?>