What does smartlmage on mean? Cache application in php smarty template engine

1. Smarty cache configuration:
$smarty->cache-dir="directory name"; //Create cache directory name
$smarty->caching=true; //Enable caching. When it is false, the cache is invalid
$smarty->cache_lifetime=60; //Cache time, unit is second
2, use and clearing of Smarty cache
$marty->display("cache.tpl",cache_id); //Create a cache with ID
$marty->clear_all_cache(); //Clear all caches
$marty->clear_cache("index.php"); //Clear the cache in index.php
$marty->clear_cache("index. php',cache_id); //Clear the cache of the specified ID in index.php
3, Smarty's local cache
The first one: The insert_ function does not cache by default, and this attribute cannot be modified
Usage: Example
index. In php,
function insert_get_time(){
return date("Y-m-d H:m:s");
}
index.html,
{insert name="get_time"}
Second: smarty_block
Define a block :smarty_block_name($params,$content, &$smarty){return $content;} //name represents the area name
Register block:$smarty->register_block('name', 'smarty_block_name', false); //No. The three parameters false means that the area is not cached.
Template writing method: {name}content{/name}
Written as block plug-in:
1) Define a plug-in function: block.cacheless.php and place it in smarty's plugins directory
block. The content of cacheless.php is as follows:
function smarty_block_cacheless($param, $content, &$smarty) {
return $content;
}
?>
2) Write programs and templates
Sample program: testCacheLess .php

Copy code The code is as follows:

include('Smarty.class.php');
$smarty = new Smarty;
$smarty->caching=true;
$smarty->cache_lifetime = 6;
$smarty->display('cache.tpl');
?>

Used template: cache.tpl
Already cached: {$smarty.now}< ;br>
{cacheless}
No cache: {$smarty.now}
{/cacheless}
4 Custom cache
Set cache_handler_func to use a custom function to handle the cache
Such as:
$smarty->cache_handler_func = " myCache";
function myCache($action, &$smarty_obj, &$cache_content, $tpl_file=null, $cache_id=null, $compile_id=null){
}
This function is generally based on $action to determine the current cache status Operation:
switch($action){
case "read"://read cache content
case "write"://write cache
case "clear"://clear
}
Generally use md5($tpl_file .$cache_id.$compile_id) as the unique cache_id
If necessary, use gzcompress and gzuncompress to compress and decompress

The above introduces what smartlmage on means and the caching application in php smarty template engine, including what smartlmage on means. I hope it will be helpful to friends who are interested in PHP tutorials.