使ecshop模板中可引用常量的实现方法

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;
}

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