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Smarty模板编译引擎序 I.开始第一章. 什么是Smarty?第二章. 安装要求基本安装扩展设置 II.模板设计者篇第三章.基本语法注释函数属性第四章.变量从PHP分配的变量 Associative arrays Array indexes Objects 从配置文件读取的变量 {$smarty}保留变量 Request variables {$smarty.now}{$smarty.const}{$smarty.capture}{$smarty.config}{$smarty.section}{$smarty.template}第五章.变量调节器 capitalize count_characters cat count_paragraphs count_sentences count_words date_format default escape indent lower nl2br regex_replace replace spacify string_format strip strip_tags truncate upper wordwrap 第六章.组合修改器第七章.内建函数 capture config_load foreach include include_php insert if ldelim literal php section index index_prev index_next iteration first last rownum loop show total strip 第八章.自定义函数 assign counter cycle debug eval fetch html_checkboxes html_image html_options html_radios html_select_date html_select_time html_table math mailto popup_init popup textformat 第九章.配置文件第十章.调试控制台 III.模板程序员篇第十一章常量 SMARTY_DIR 第十二章变量 $template_dir $compile_dir $config_dir $plugins_dir $debugging $debug_tpl $debugging_ctrl $global_assign $undefined $autoload_filters $compile_check $force_compile $caching $cache_dir $cache_lifetime $cache_handler_func $cache_modified_check $config_overwrite $config_booleanize $config_read_hidden $config_fix_newlines $default_template_handler_func $php_handling $security $secure_dir $security_settings $trusted_dir $left_delimiter $right_delimiter $compiler_class $request_vars_order $compile_id $use_sub_dirs $default_modifiers $default_resource_type 第十三章.方法 append append_by_ref assign assign_by_ref clear_all_assign clear_all_cache clear_assign clear_cache clear_compiled_tpl clear_config config_load display fetch get_config_vars get_registered_object get_template_vars is_cached load_filter register_block register_compiler_function register_function register_modifier register_object register_outputfilter register_postfilter register_prefilter register_resource trigger_error template_exists unregister_block unregister_compiler_function unregister_function unregister_modifier unregister_object unregister_outputfilter unregister_postfilter unregister_prefilter unregister_resource 第十四章.缓存 Setting Up Caching Multiple Caches Per Page Cache Groups Controlling Cacheability of Plugins' Output 第十五章.高级特点 Objects Prefilters Postfilters Output Filters Cache Handler Function Resources Templates from $template_dir Templates from any directory Templates from other sources Default template handler function 第十六章.以插件扩展Smarty How Plugins Work Naming Conventions Writing Plugins Template Functions Modifiers Block Functions Compiler Functions Prefilters/Postfilters Output Filters Resources Inserts Ⅳ.高级特点第十七章.疑难解答 Smarty/PHP errors 第18章.使用技巧和经验 Blank Variable Handling Default Variable Handling Passing variable title to header template Dates WAP/WML Componentized Templates Obfuscating E-mail Addresses 第十九章. 相关资源第二十章. 漏洞

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$cache_lifetime
缓存生存时间变量

This is the length of time in seconds that a template cache is valid. Once this time has expired, the cache will be regenerated. $caching must be set to "true" for $cache_lifetime to have any purpose. A value of -1 will force the cache to never expire. A value of 0 will cause the cache to always regenerate (good for testing only, to disable caching a more efficient method is to set $caching = false.)
该变量定义模板缓存有效时间段的长度(单位秒),一旦这个时间失效,则缓存将会重新生成.如果要想实现所有效果,$caching必须因$cache_lifetime需要而设为"true".值为-1时,将强迫缓存永不过期.0值将导致缓存总是重新生成(仅有利于测试,一个更有效的使缓存无效的方法是设置$caching = false.)

If $force_compile is enabled, the cache files will be regenerated every time, effectively disabling caching. You can clear all the cache files with the clear_all_cache() function, or individual cache files (or groups) with the clear_cache() function.
如果启动了强迫编译,则缓存文件每次将会重新生成.要想有效地停止缓存,你可以利用clear_all_cache() 函数清除所有的缓存文件,或者利用clear_cache() 函数清除个别文件(或文件组).

Technical Note: If you want to give certain templates their own cache lifetime, you could do this by setting $caching = 2, then set $cache_lifetime to a unique value just before calling display() or fetch().
技巧:如果你想给某些模板设定它们自己的缓存生存时间,你可以在调用display()或fetch()函数之前,通过设置$caching = 2,然后设置$cache_lifetime为一个唯一值来实现.

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