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Informations about the package wp-cache-remember

WP Cache Remember

Build Status Coverage Status GitHub release

WP Cache Remember is a simple WordPress include to introduce convenient new caching functions.

Well-built WordPress plugins know when to take advantage of the object cache and/or transients, but they often end up with code that looks like this:

That pattern works well, but there's a lot of repeated code. This package draws inspiration from Laravel's Cache::remember() method; using wp_cache_remember(), the same code from above becomes:

Installation

The best way to install this package is via Composer:

The package ships with the composer/installers package, enabling you to control where you'd like the package to be installed. For example, if you're using WP Cache Remember in a WordPress plugin, you might store the file in an includes/ directory. To accomplish this, add the following to your plugin's composer.json file:

Then, from within your plugin, simply include or require the file:

Using as a plugin

If you'd prefer, the package also includes the necessary file headers to be used as a WordPress plugin.

After downloading or cloning the package, move wp-cache-remember.php into either your wp-content/mu-plugins/ (preferred) or wp-content/plugins/ directory. If you chose the regular plugins directory, you'll need to activate the plugin manually via the Plugins › Installed Plugins page within WP Admin.

Bundling within a plugin or theme

WP Cache Remember has been built in a way that it can be easily bundled within a WordPress plugin or theme, even commercially.

Each function declaration is wrapped in appropriate function_exists() checks, ensuring that multiple copies of the library can co-exist in the same WordPress environment.

Usage

WP Cache Remember provides the following functions for WordPress:

Each function checks the response of the callback for a WP_Error object, ensuring you're not caching temporary errors for long periods of time. PHP Exceptions will also not be cached.

wp_cache_remember()

Retrieve a value from the object cache. If it doesn't exist, run the $callback to generate and cache the value.

Parameters

(string) $key
The cache key.
(callable) $callback
The callback used to generate and cache the value.
(string) $group
Optional. The cache group. Default is empty.
(int) $expire
Optional. The number of seconds before the cache entry should expire. Default is 0 (as long as possible).

Example

wp_cache_forget()

Retrieve and subsequently delete a value from the object cache.

Parameters

(string) $key
The cache key.
(string) $group
Optional. The cache group. Default is empty.
(mixed) $default
Optional. The default value to return if the given key doesn't exist in the object cache. Default is null.

Example

remember_transient()

Retrieve a value from transients. If it doesn't exist, run the $callback to generate and cache the value.

Parameters

(string) $key
The cache key.
(callable) $callback
The callback used to generate and cache the value.
(int) $expire
Optional. The number of seconds before the cache entry should expire. Default is 0 (as long as possible).

Example

forget_transient()

Retrieve and subsequently delete a value from the transient cache.

Parameters

(string) $key
The cache key.
(mixed) $default
Optional. The default value to return if the given key doesn't exist in transients. Default is null.

remember_site_transient()

Retrieve a value from site transients. If it doesn't exist, run the $callback to generate and cache the value.

This function shares arguments and behavior with remember_transient(), but works network-wide when using WordPress Multisite.

forget_site_transient()

Retrieve and subsequently delete a value from the site transient cache.

This function shares arguments and behavior with forget_transient(), but works network-wide when using WordPress Multisite.

License

Copyright 2018 Steve Grunwell

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

All versions of wp-cache-remember with dependencies

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Requires php Version >=5.2
composer/installers Version ^1.0||^2.0
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