Observer Mode Observer
Achieving the goal: transform the Select box to change the content area and ad areaGeneral Ideas1: Judging the selected value2: Order down, modify the content area according to the value3: Edit the ad area again.
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"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-
This article mainly introduces how to use PHPEmbedSAPI to implement the Opcodes viewer. If you need it, you can refer to PHP to provide an Embed SAPI. That is to say, PHP allows you to call functions provided by PHP/ZE in C/C ++. This article uses
How to use PHPEmbedSAPI to implement the Opcodes viewer and sapiopcodes. How to use PHPEmbedSAPI to implement the Opcodes viewer, sapiopcodesPHP provides an EmbedSAPI, that is, PHP allows you to call functions provided by PHPZE in the CC ++ language.
How to implement the Opcodes Viewer using PHP Embed SAPI, Sapiopcodes
PHP provides a embed SAPI, which means that PHP allows you to invoke functions provided by php/ze in the C + + language. This article implements a PHP Opcodes viewer based on the
PHP provides a embed SAPI, that is, PHP allows you to invoke the functions provided by php/ze in C + + language. This article implements a PHP Opcodes viewer based on embed SAPI.
First of all, download the PHP source code for compiling, I now use
Observer pattern (Observer pattern): 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. Also called publish-subscribe mode
(i) Why observer
# # # #观察者模式 * Designed to let an object track a state, know how the state changes, once the state changes, all subscribed objects can be notified # # #使用SPL实现观察者模式 * Splsubject interface has three abstract methods attach (), Detach (), notify ()
Php + MySql implements the login system and output viewer information function, phpmysql
The idea of this system is exactly the same as that of ASP login System in asp connection Access Database (click to open the link), except that the programming
Viewer mode:Observer pattern (Observer pattern): Defines a one-to-many dependency between objects, so that whenever an object state changes, its dependent objects are notified and automatically updated. The observer pattern is also called
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