smarty - What is the error in this php? I didn't find the mistake

This is a snippet of code for smarty settings found online.

It prompts at the beginning
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in F:phpstudyWWWsmartysconfig.php on line 2
I saw that the second line was fine, so I typed it again, and it was the same.

Then it prompts
Parse error: syntax error, unexpected T_VARIABLE in F:phpstudyWWWsmartysconfig.php on line 4
This is very confusing, $tpl = new Smarty(); Is this sentence wrong?

Thank you.

template_dir = __SITE_ROOT . "/templates/";  
　　$tpl->compile_dir = __SITE_ROOT . "/templates_c/";  
　　$tpl->config_dir = __SITE_ROOT . "/configs/";  
　　$tpl->cache_dir = __SITE_ROOT . "/cache/";  
　　$tpl->left_delimiter = @#<{@#;  
　　$tpl->right_delimiter = @#}>@#;  
　　?>

Reply content:

This is a snippet of code for smarty settings found online.

It prompts at the beginning
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in F:phpstudyWWWsmartysconfig.php on line 2
I saw that the second line was fine, so I typed it again, and it was the same.

Then it prompts
Parse error: syntax error, unexpected T_VARIABLE in F:phpstudyWWWsmartysconfig.php on line 4
This is very confusing, $tpl = new Smarty(); Is this sentence wrong?

Thank you.

template_dir = __SITE_ROOT . "/templates/";  
　　$tpl->compile_dir = __SITE_ROOT . "/templates_c/";  
　　$tpl->config_dir = __SITE_ROOT . "/configs/";  
　　$tpl->cache_dir = __SITE_ROOT . "/cache/";  
　　$tpl->left_delimiter = @#<{@#;  
　　$tpl->right_delimiter = @#}>@#;  
　　?>

Make sure the reference path is correct, or try removing the smarty brackets. For example

$tpl = new Smarty;

The path introduced in the first line is wrong?

Like a path problem? Try removing the slash at the beginning of the path. .
The first error is probably a BOM problem, don’t use Notepad to save it.

@#What is it? Is there something wrong with my display?
In addition, many people say that it is a problem with the introduction path. Obviously this is wrong. The error occurs during the code interpretation period and has not yet been executed.

@#What the hell is this? Looking at the error message, it is not an error in new Smarty;, nor is it an error in include.

Did you copy the code online? I guess the Chinese characters caused the parsing error, which cannot be seen with the naked eye