block functions区块函数插件的定义与使用

在插件目录plugins里新建文件 block.插件名.php文件（如 block.插件名.php）

例：block.test2.php

<?php
    function smarty_block_test2($params,$content)
    {
	    $replace=$params['replace'];
		$maxnum=$params['maxnum'];
		if($replace=='true'){
			$content=str_replace('，',',',$content);
			$content=str_replace('。','.',$content);
		}
		$content=substr($content,0,$maxnum);
		return $content;
    }
?>

在tpl中新建content.html

{test2 replace='true' maxnum=29}
{$str}
{/test2}

index.php

<?php
require('../smarty/Smarty.class.php');
$smarty = new Smarty();
//五配置
$smarty->left_delimiter = "{"; 
$smarty->right_delimiter = "}";
$smarty->template_dir ="tpl";
$smarty->compile_dir ="template_c";
$smarty->cache_dir ="cache";
//开启缓存的另两个配置
$smarty->caching =true;
$smarty->cache_lifetime =120;

$smarty->assign('str','Hello，my name is Han Meimei。How are you?');
$smarty->display('content.html');
?>

运行结果：

Hello,my name is Han Meimei.