e544ed6d9a
Comparing changes: https://github.com/smarty-php/smarty/compare/v4.3.1...v4.4.1 It is noticeable that Smarty 4.3.1 does not officially support PHP 8.3. Is only supported with 4.4.0. Remark: During tests with Smarty 4.5.1, it was noticed that the following warning occurs: Deprecated: Using the unregistered function "function_exists" in a template is deprecated and will be removed in a future version. Use Smarty::registerPlugin to explicitly register a custom modifier. As of Smarty 5.X.X, templates must be revised again. The Smarty release 5.0.2 is already officially available. However, integration into FlatPress is not entirely trivial.
82 lines
2.1 KiB
Markdown
82 lines
2.1 KiB
Markdown
isCached()
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returns true if there is a valid cache for this template
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Description
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===========
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bool
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isCached
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string
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template
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string
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cache\_id
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string
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compile\_id
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- This only works if [`$caching`](#variable.caching) is set to one of
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`Smarty::CACHING_LIFETIME_CURRENT` or
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`Smarty::CACHING_LIFETIME_SAVED` to enable caching. See the [caching
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section](#caching) for more info.
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- You can also pass a `$cache_id` as an optional second parameter in
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case you want [multiple caches](#caching.multiple.caches) for the
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given template.
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- You can supply a [`$compile id`](#variable.compile.id) as an
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optional third parameter. If you omit that parameter the persistent
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[`$compile_id`](#variable.compile.id) is used if its set.
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- If you do not want to pass a `$cache_id` but want to pass a
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[`$compile_id`](#variable.compile.id) you have to pass NULL as a
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`$cache_id`.
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> **Note**
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>
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> If `isCached()` returns TRUE it actually loads the cached output and
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> stores it internally. Any subsequent call to
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> [`display()`](#api.display) or [`fetch()`](#api.fetch) will return
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> this internally stored output and does not try to reload the cache
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> file. This prevents a race condition that may occur when a second
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> process clears the cache between the calls to `isCached()` and to
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> [`display()`](#api.display) in the example above. This also means
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> calls to [`clearCache()`](#api.clear.cache) and other changes of the
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> cache-settings may have no effect after `isCached()` returned TRUE.
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<?php
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$smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);
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if(!$smarty->isCached('index.tpl')) {
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// do database calls, assign vars here
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}
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$smarty->display('index.tpl');
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?>
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<?php
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$smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);
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if(!$smarty->isCached('index.tpl', 'FrontPage')) {
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// do database calls, assign vars here
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}
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$smarty->display('index.tpl', 'FrontPage');
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?>
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See also [`clearCache()`](#api.clear.cache),
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[`clearAllCache()`](#api.clear.all.cache), and [caching
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section](#caching).
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