Smarty’s programming part:
In the template design part of smarty, I briefly introduced some common settings of smarty in the template. This section mainly introduces how to start our process in smarty
Program design.
PHP code:-------------------------------------------------- ----------------------------------
First, let’s introduce some elements in the .php file we used in the previous section. Similarly, let’s take the index.php file at the beginning of the previous section to illustrate:
================================================== =
index.php
================================================
/*********************************************
*
* File name: index.php
* Function: Display example program
*
**********************************************/
include_once("./comm/Smarty.class.php"); //Include smarty class files
$smarty = new Smarty(); //Create smarty instance object $smarty
$smarty->templates("./templates"); //Set template directory
$smarty->templates_c("./templates_c"); //Set the compilation directory
//****Attention everyone, I am the new member here****//
$smarty->cache("./cache"); //Set the cache directory
$smarty->cache_lifetime = 60 * 60 * 24; //Set cache time
$smarty->caching = true; //Set caching method
//--------------------------------------------- -------
//The left and right boundary characters, the default is {}, but in actual application it is easy to use JavaScript
//Conflict, so it is recommended to set it to <{}> or other.
//------------------------------------------------ ----
$smarty->left_delimiter = "<{";
$smarty->right_delimiter = "}>";
$smarty->assign("name", "Li Xiaojun"); //Replace template variables
//Compile and display the index.tpl template located under ./templates
$smarty->display("index.tpl");
?>
We can see that the program part of smarty is actually a set of codes that conform to the PHP language specification. Let’s explain them in turn:
1. /**/Statement:
The included part is the program header comments. The main content should be a brief introduction to the function of the program, copyright, author and writing time. This is not necessary in smarty
Necessary, but in terms of program style, this is a good style.
2. include_once statement:
It will include the smarty file installed on the website into the current file. Note that the included path must be written correctly.
3. $smarty = new Smarty():
This sentence creates a new Smarty object $smarty, which is a simple instantiation of an object.
4. $smarty->templates(""):
This sentence specifies the path when the $smarty object uses the tpl template. It is a directory. Without this sentence, Smarty's default template path is templates
Directory, when actually writing a program, we need to specify this sentence. This is also a good programming style.
5. $smarty->templates_c(""):
This sentence specifies the directory where the $smarty object is compiled. In the template design chapter, we already know that Smarty is a compiled template language, and this directory is what it compiles
Template directory, please note here that if the site is located on a *nix server, please ensure that the directory defined in teamplates_c has writable and readable permissions. By default, its compilation directory
is templates_c in the current directory. For the same reason, we write it out explicitly.
6. $smarty->left_delimiter and $smarty->right_delimiter:
Specifies the left and right separators when looking for template variables. By default, it is "{" and "}", but in practice, because we need to use
