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Package dice
Short Description A minimalist Dependency injection container (DIC) for PHP. Please note: 3.0+ is only compatible with PHP 7.0. The 2.0 branch is compatbile with PHP 5.6.
License BSD-2-Clause
Homepage http://r.je/dice.html
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Informations about the package dice
Dice PHP Dependency Injection Container
Dice is a minimalist Dependency Injection Container for PHP with a focus on being lightweight and fast as well as requiring as little configuration as possible.
Project Goals
1) To be lightweight and not a huge library with dozens of files (Dice is a single 100 line class) yet support all features (and more) offered by much more complex containers
2) To "just work". Basic functionality should work with zero configuration
3) Where configuration is required, it should be as minimal and reusable as possible as well as easy to use.
4) Speed! (See the section on performance)
Installation
Just include the lightweight Dice.php in your project and it's usable without any further configuration:
Simple example:
Full Documentation
For complete documentation please see the Dice PHP Dependency Injection container home page
PHP version compatibility
Dice is compatible with PHP 7.0 and up, there are archived versions of Dice which support PHP 5.6 however this is no longer maintanied.
Performance
Dice uses reflection which is often wrongly labelled "slow". Reflection is considerably faster than loading and parsing a configuration file. There are a set of benchmarks here and here (To download the benchmark tool yourself see this repository) and Dice is faster than the others in most cases.
In the real world test (test 6) Dice is neck-and-neck with Pimple (which requires writing an awful lot of configuration code) and although Symfony\DependencyInjection is faster at creating objects, it has a larger overhead and you need to create over 500 objects on each page load until it becomes faster than Dice. The same is true of Phalcon, the overhead of loading the Phalcon extension means that unless you're creating well over a thousand objects per HTTP request, the overhead is not worthwhile.
Credits
Originally developed by Tom Butler (@TomBZombie), with many thanks to daniel-meister (@daniel-meister), Garrett W. (@garrettw), maxwilms (@maxwilms) for bug fixes, suggestions and improvements.
Updates
15/11/2018 4.0 Release - Backwards incompatible
Dice is now immutable and has better support for other immutable objects.
New Features
1. Dice is Immutable
This avoids issues surrounding mutability where a Dice instance is passed around the application and reconfigured. The only difference is that addRules and addRule return a new Dice instance with the updated rules rather than changing the state of the existing instance.
From a practical perspective in most cases just put $dice = in front of any $dice->addRule() call and it will work as before.
2. Support for Object Method Chaining
One feature some immutable objects have is they offer object chaining.
Consider the following Object:
It was not possible for Dice to consturuct the configured object in previous versions. As of 4.0 Dice supports chaining method call using the call rule and the Dice::CHAIN_CALL constant:
Dice will replace the HTTPRequest object with the result of the chained call. This is also useful for factories:
06/03/2018 3.0 Release - Backwards incompatible
New Features
1. The JSON loader has been removed in favour of a new addRules method.
The purpose of this addition is to make the JSON loader redundant. Loading of rules from a JSON file can easily be achieved with the code:
2. Better JSON file support: constants and superglobals
In order to improve support for rules being defined in external JSON files, constants and superglobals can now be passed into objects created by Dice.
For example, passing the $_SERVER superglobal into a router instance and calling PDO's setAttribute with PDO::ATTR_ERRMODE and PDO::ERRMODE_EXCEPTION can be achieved like this in a JSON file:
rules.json
Backwards incompatible changes
-
Dice 3.0 requires PHP 7.0 or above, PHP 5.6 is no longer supported.
- Dice no longer supports
'instance'keys to signify instances. For example:
As noted in issue #125 this made it impossible to pass an array to a constructor if the array had a key 'instance'. Instead, the new \Dice\Dice::INSTANCE constant should be used:
to make the constant shorter to type out, you can use \Dice\Dice; and reference Dice::INSTANCE
10/06/2016
Backwards incompatible change
Based on Issue 110 named instances using instanceOf will now inherit the rules applied to the class they are instances of:
$dice->create('$MyNamedInstance') will now create a class following the rules applied to both MyClass and $MyNamedInstance so the instance will be shared.
Previously only the rules applied to the named instance would be used.
To restore the old behaviour, set inherit to false on the named instance:
29/10/2014
- Based on Issue #15, Dice will now only call closures if they are wrapped in \Dice\Instance. PLEASE NOTE: THIS IS BACKWARDS INCOMPATIBLE .
Previously Dice ran closures that were passed as substitutions, constructParams and when calling methods:
This behaviour has changed as it makes it impossible to provide a closure as a construct parameter or when calling a method because the closure was always called and executed.
To overcome this, Dice will now only call a closures if they're wrapped in \Dice\Instance:
04/09/2014
- Pushed PHP5.6 branch live. This is slightly more efficient using PHP5.6 features. For PHP5.4-PHP5.5 please see the relevant branch. This version will be maintained until PHP5.6 is more widespread.
26/08/2014
- Added PHP5.6 branch. Tidied up code by using PHP5.6 features. This will be moved to master when PHP5.6 is released
28/06/2014
- Greatly improved efficienty. Dice is now the fastest Dependency Injection Container for PHP!
06/06/2014
- Added support for cyclic references ( https://github.com/TomBZombie/Dice/issues/7 ). Please note this is poor design but this fix will stop the infinite loop this design creates.
27/03/2014
- Removed assign() method as this duplicated functionality available using $rule->shared
- Removed $callback argument in $dice->create() as the only real use for this feature can be better achieved using $rule->shareInstances
- Tidied up code, removing unused/undocumented features. Dice is now even more lightweight and faster.
- Fixed a bug where when using $rule->call it would use the substitution rules from the constructor on each method called
- Updated Dice documentation to use shorthand array syntax
01/03/2014
- Added test cases for the Xml Loader and Loader Callback classes
- Added a JSON loader + test case
- Added all test cases to a test suite
- Moved to PHP5.4 array syntax. A PHP5.3 compatible version is now available in the PHP5.3 branch.
- Fixed an issue where using named instances would trigger the autoloader with an invalid class name every time a class was created
28/02/2014
- Added basic namespace support. Documentation update will follow shortly. Also moved the XML loader into its own file, you'll need to include it separately if you're using it.
- Please note: CHANGES ARE NOT BACKWARDS COMPATIBLE. However they are easily fixed by doing the following find/replaces:
