Ec (2); 1. To enable the smarty cache by using the cache, set caching to true and specify cache_dir. use cache_lefetime to specify the cache survival time. In seconds, multiple different caches must be generated for the same page. Add the second parameter cache_id to display or fetch, for example, $ smarty-& gt; display (index. tpl, $ my_cache_id); this feature is available in script ec (2) and script
I. Use Cache
To enable the smarty cache, set caching to true and specify cache_dir.
Use cache_lefetime to specify the cache survival time, in seconds
To generate multiple different caches for the same page, add the second parameter cache_id to the display or fetch, for example, $ smarty-> display (''index. tpl '', $ my_cache_id); this feature can be used to cache different $ _ GET
Ii. Clear Cache
Clear_all_cache (); // clear all caches
Clear_cache (''index. tpl ''); // clear the cache of index. tpl
Clear_cache (''index. tpl '', cache_id); // clear the cache with the specified id
Iii. Use custom Cache
Set cache_handler_func to process cache using custom functions
For example:
$ Smarty-> cache_handler_func = "myCache ";
Function myCache ($ action, & $ smarty_obj, & $ cache_content, $ tpl_file = null, $ cache_id = null, $ compile_id = null ){
}
This function usually uses the root action $ action to determine the current cache operation:
Switch ($ action ){
Case "read": // read the cached content
Case "write": // write Cache
Case "clear": // clear
}
Generally, md5 ($ tpl_file. $ cache_id. $ compile_id) is used as the unique cache_id.
If necessary, use gzcompress and gzuncompress to compress and decompress
Iv. Disable local cache
There are several ways to invalidate the cache in some regions (only cache is required:
Inser:
Defines the handler to be used for an inser label. The function name format is: insert_xx (array $ params, object & $ smarty). xx indicates the name of insert, that is, if the function you define is insert_abc, the method used in the template is {insert name = ''abc ''}
The parameter is passed in through $ params
You can also create an insert plug-in. The file name is insert. xx. php, and the function name is smarty_insert_aa ($ params, & $ smarty). xx is defined as the same as above.
Register_block:
Define a block: smarty_block_name ($ params, $ content, & $ smarty) {return $ content;} // name indicates the region name
Register a block: $ smarty-> register_block ('name', ''smarty _ block_name '', false); // The third parameter false indicates that the region is not cached.
Template syntax: {name} content {/name}
Write the block plug-in:
1) define a plug-in function: block. cacheless. php, which is placed in the smarty plugins directory.
The contents of block. cacheless. php are as follows:
2) write programs and templates
Example: testCacheLess. php
Template used: cache. tpl
Cached: {$ smarty. now}
{Cacheless}
No cache: {$ smarty. now}
{/Cacheless}
Solution to some non-cached templates:
Smarty provides powerful caching functions. However, sometimes we do not want the entire document to be cached, but choose to cache a part of the content or a part of the content. For example, if you use a template with the ad bar position on the top of the page, the ad bar can contain any HTML, image, FLASH, and other mixed information. therefore, a static link cannot be used here, and we do not want the ad bar to be cached. this requires the insert function to specify and a function to retrieve the content of the advertisement bar. Smarty also provides this Cache control capability.
We can use {insert} to make part of the template not cached.
You can use $ smarty-> register_function ($ params, & $ smarty) to prevent the plug-in from outputting data from the cache,
You can also use $ smarty-> register_block ($ params, & $ smarty) to prevent a part of the entire page from being cached.
The following describes the three methods to control the cache output for a simple requirement.
Requirement: the cached document is not cached at the current time and changes with each refresh.
<
