myfun.tpl

自定義函數的使用配置
<{*這是注釋*}>


<{myfun times="10" con="Hello world, this is user defined function!" color="red" size="5"}>


now time is 
<{date_now format="%Y/%m/%d"}>
<{*下面是自定義塊函數調用*}>


下面是塊標簽


<{blockTest times="10" color="green" size="5"}>
Hello world,this is block function test!
<{/blockTest}>

"' );
$smarty = new Smarty ();
$smarty->left_delimiter = "<{";
$smarty->right_delimiter = "}>";
// 注冊plugin函數中的三個參數
// type defines the type of the plugin. Valid values are "function", "block", "compiler" and "modifier".
// name defines the name of the plugin.
// callback defines the PHP callback. it can be either:
$smarty->registerPlugin ( "function", "myfun", "myfun" );
function myfun($args) {
	$str = "";
	for($i = 0; $i < $args ['times']; $i ++) {
		$str .= "" . $args ['con'] . "
";
	}
	return $str;
}

$smarty->registerPlugin ( "function", "date_now", "print_current_date" );
function print_current_date($params, $smarty) {
	if (empty ( $params ["format"] )) {
		$format = "%b %e, %Y";
	} else {
		$format = $params ["format"];
	}
	return strftime ( $format, time () );
}

$smarty->registerPlugin ( "block", "blockTest", "blockTest" );
// 自定義函數(塊方式)
function blockTest($args, $con) {
	$str = "";
	// 此處注意為什麼要加empty判斷，如果不加此判斷的話，在$con為空的情況下，$str也會被輸出十次，從而造成頁面中有很多的空行，這種問題的原因是
	// 因為smarty計算在前，你獲取數據在後，也就是說第一次時，$con已經被smarty計算過了（雖然$con沒有值），但是確實在smarty內部計算過了,而且之後也進行了輸出
	if (! empty ( $con )) {
		for($i = 0; $i < $args ['times']; $i ++) {
			$str .= "" . $con . "
";
		}
	} // echo $str;
	return $str;
}

$smarty->display ( "myfun.tpl" );
?>