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使ecshop模板中可引用常量的实现方法

WBOY
Release: 2016-06-13 12:09:32
Original
1136 people have browsed it

比如$smarty.const.'常量',这个就不能用。
其实模板引擎原理上并不复杂,只是把一些模板标签替换为php中的函数,变量,语法结构罢了。
这次要在ecshop模板中加入引用常量的功能,只需在函数make_var()中加入两行代码

复制代码 代码如下:


function make_var($val)
{
if (strrpos($val, '.') === false)
{
if (isset($this->_var[$val]) && isset($this->_patchstack[$val]))
{
$val = $this->_patchstack[$val];
}
$p = '$this->_var[\'' . $val . '\']';
}
else
{
$t = explode('.', $val);
$_var_name = array_shift($t);
if (isset($this->_var[$_var_name]) && isset($this->_patchstack[$_var_name]))
{
$_var_name = $this->_patchstack[$_var_name];
}
if ($_var_name == 'smarty')
{
if($t[0] == 'const'){
return strtoupper($t[1]);
}
$p = $this->_compile_smarty_ref($t);
}
else
{
$p = '$this->_var[\'' . $_var_name . '\']';
}
foreach ($t AS $val)
{
$p.= '[\'' . $val . '\']';
}
}
return $p;
}


其中21-23行是新加的,这让就可在模板文件中通过 {$smarty.const.常量}来引用php中定义的常量了

复制代码 代码如下:


21 if($t[0] == 'const'){
22 return strtoupper($t[1]);
23 }

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