This article mainly introduces the Laravel service provider (serviceprovider) interpretation, has a certain reference value, now share to everyone, the need for friends can refer to
The service provider is the boot Center for all Laravel
[Intention]
Defines a one-to-many dependency between objects. When the status of an object changes, all objects dependent on it are notified and automatically updated. [GOF95] is also called the Publish-Subscribe mode and Model-View Mode) mode,
1. Pattern definition
Repository is a separate layer between the domain layer and the Data map layer (the data access layer). Its presence makes the domain layer less aware of the existence of the data access layer, providing a similar set of
This article mainly sorts out the predefined interfaces of PHP, which are commonly used in the project process: IteratorAggregate (Iterator of aggregate Iterator), Countable, ArrayAccess, Iterator, you can refer to the following predefined
This article mainly introduces the Observer mode (Observer) of PHP design mode in detail and code examples. if you need it, refer
[Intention]
Defines a one-to-many dependency between objects. when the status of an object changes, all objects
PHP control inversion and dependency injection:
b=new B();$this->c=new C();$this->b->Method();$this->c->Method();//TODO} }class B{public function B(){//TODO}public function Method(){//TODOecho 'b';}}class C{public function C(){//TODO}public
That is to say, if you need to modify Class B or class C during future development, once the function is renamed, the number of function parameters changes, or even the adjustment of the entire class structure, we also need to make corresponding
"Intent"
Defines a one-to-many dependency between objects, and when an object's state changes, all objects that depend on it are notified and automatically updated "GOF95", also known as publish-subscribe (publish-subscribe) mode, model-view (model-
Object-oriented object concept is the core of object-oriented technology. The things we face in the show world are objects, such as computers, televisions, bicycles, etc. In object-oriented program design, object is a whole that consists of
Self-developed PHP framework I (database operation encapsulation) compiling of the PDO layer encapsulation and model-based methods of self-developed PHP Framework
If you are a sprayer and ask me how to use the wheel to make so much effort, then
1. What is an exception? What is the difference between an exception and an error?
1. Exception: program operation is not consistent with expectations, and errors are two different concepts!2. Throwing and catching exceptions3. Multiple catch
Let's take a look:
Next let's take a look at how php implements the plotting function.
/**** @ Project Bar Graph Program* @ License GPL* @ Package* @ File GrapBar. php* @ Date 2007-4-3* @ Version 1.0* @ Last modified* Define the column chart class**
===================================================
Object-oriented PHP:
An object is an entity that objectively exists.A class is a description of an object abstraction.
Concept: The relationship of objects (entities), classes, classes, and
Let's take a look at the effect chart first:
Let's look at how PHP implements the drawing function.
/**** @project Bar Graph Program* @license GPL* @package* @file grapbar.php* @date 2007-4-3* @version 1.0* @last Modified* Define Column chart
Intention
Defines a one-to-many dependency between objects, and when the state of an object changes, all objects that depend on it are notified and automatically updated "GOF95", also known as publish-subscribe (publish-subscribe) mode, model-view (
For example, {code...} A and B have different roles. They cannot be merged. The content of {code...} C and D is exactly the same. Is there any good way to write the content of C and D? Because it is backward compatible with 5.3, trait cannot be used
PHP Chinese letter/digit verification code class, which allows you to customize the font. In actual project development, verification code problems are often encountered, such as login pages, message pages, registration page verification code
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