Notes on using Smarty in PHP and several ways to access variables

$tpl=new Smarty();//Create a smarty object. I am using Smarty-3.1.6 version
1. Set the smarty template path $tpl->setTemplateDir(); The default is templates
2. Set smarty template compilation path $tpl->setCompileDir(); The default is templates_c
3. Set the left and right separators of smarty template engine,

$tpl->left_delimiter="<{";

$tpl->right_delimiter="}>";

By default: public $left_delimiter = "{";//smarty source code

public $right_delimiter = "}";//smarty source code

Why do we need to change these separators?

Because for example, in earlier versions of smarty engine templates, errors will be reported and cannot be automatically recognized.
For example:

or in javascript

Copy code The code is as follows: