Cache application in php smarty template engine_PHP tutorial

1. Smarty cache configuration:
$smarty->cache-dir="directory name"; //Create cache directory name
$smarty->caching=true; //Enable caching, which is false When the cache is invalid
$smarty->cache_lifetime=60; //Cache time, the unit is seconds
2, the 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 index.php Cache in
$marty->clear_cache("index.php',cache_id); //Clear the cache with the specified ID in index.php
3, Smarty's local cache
First: insert _The function is not cached by default, and this attribute cannot be modified
How to use: Example
index.php,
function insert_get_time(){
return date("Y-m-d H:m:s") ;
} In
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); //The third parameter false represents that the area is not The cached
template is written as: {name}content{/name}
is written as a 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:

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

Template used: cache.tpl
Cached: {$smarty. now}

{cacheless}
No cache: {$smarty.now}
{/cacheless}
4 Custom cache
Set cache_handler_func to use custom function processing 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 generally determines the current operation of the cache based on $action:
switch($action){
case "read"://read cache content
case "write"://write cache
case "clear"://clear
}
Generally use md5 ($tpl_file.$cache_id.$compile_id) as the only cache_id
If If necessary, you can use gzcompress and gzuncompress to compress and decompress

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