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先识别标签后计算的模板思路

May 25, 2016 pm 05:13 PM

传统模板引擎的思路是:计算模板变量->设置模板变量(assign)->整合模板并显示页面。
现在想要实现这样的效果:识别模板变量->计算模板变量->整合并显示页面。
这里提供一种思路,利用PHP的魔术方法 __call 来实现。

<?php
//模板变量处理对象:
class template
{
public function main($op)
{
return $this;
}

public function __call($name,$args)
{
$method_name = &#39;get_&#39;.$name;

if (!method_exists($this, $method_name))
{
cwarning(&#39;找不到模板变量:&#39;,$name);
}

if (!empty($args))
{
$r = $this->$method_name($args[0]);
}
else
{
$r = $this->$method_name();
}

return $r;
}

/**
 * hello world
 * @return string
*/
public function get_test($op)
{
return &#39;hello world!&#39;;
}
}
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<html>
<body>
<?php
//获得模板变量对象
$o = new template();
$tpl = $o->main();

//声明页面标签
$test = $tpl->test();
?>

<div><?php echo $test; ?></div>
</body>
</html>
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