A detailed description of the troubleshooting process in PHP

In an object-oriented program, the largest switch/case statement I've ever seen has more than 20 conditions. During the run, the code module executes all the conditions each time. Each condition is responsible for creating a new object that is used to communicate with the external use of the application API. After performing some general troubleshooting on one of them, I began to look at the interfaces implemented by the application. To my surprise, every class referenced in the Switch/case statement implements the same interface! When you then add a new conditional statement to the Switch/case statement, I recommend using Factory mode instead. What is a factory model? The factory design pattern provides an interface to get a new instance of an object, while making the calling code avoid determining the actual instantiation of the base class. As PHP develops and becomes a language, its functionality continues to provide a simple development tool through the application of proven design patterns. A particularly useful feature in PHP is the ability to create new instances of classes based on variable content. This dynamic method of object instantiation is a way of building a block of code that implements the factory design pattern in PHP. Based on the factory design pattern

1. PHP Object-oriented Advanced design mode: Factory mode Use instance

Summary: In an object-oriented program, the largest switch/case statement I've ever seen has more than 20 conditions. During the run, the code module executes all the conditions each time. Each condition is responsible for creating a new object that is used to communicate with the external use of the application API. After performing some general troubleshooting on one of them, I began to look at the interfaces implemented by the application. To my surprise, every class referenced in the Switch/case statement implements the same interface! When you then add a new conditional statement to the Switch/case statement, I recommend using Factory mode instead.

2. Detailed on-line MySQL synchronous error fault handling method code summary

Introduction: The following small series for everyone to bring an online MySQL synchronization error Troubleshooting method Summary (must read). Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little knitting.

3. The local computer cannot start Apache troubleshooting, Apache troubleshooting _php Tutorial

Summary: The local computer was unable to start Apache troubleshooting, and Apache failed to handle it. The local computer does not start Apache fault handling, Apache troubleshooting recently due to work needs, to learn PHP BASIC programming, so learn to set up PHP working environment. But as described in the textbook

4. The local computer fails to start Apache troubleshooting, Apache fault handling

Summary: The local computer was unable to start Apache troubleshooting, and Apache failed to handle it. The local computer does not start Apache fault handling, Apache troubleshooting recently due to work needs, to learn PHP BASIC programming, so learn to set up PHP working environment. But as described in the textbook

5. Oracle database System emergency Fault handling method

Brief: Oracle database system emergency Fault handling method

6. Oracle ora-01172,01151 Troubleshooting Detailed tutorial

Introduction: This article describes the Oracle ora-01172,01151 troubleshooting detailed tutorial, the need for students can refer to the 01151 troubleshooting methods.

7. ora-04301 Fault Handling in Oracle

Introduction: This article to introduce in the use of Oracle database 04301 error resolution, have met with the problem of classmates can refer to this article to deal with Oh, this article to take notes to use.

8. ORA-10567 Fault Handling

Introduction: Scenario Description Database version: 11.2.0.164bitactivedataguard operating system version: Centos5.864bit Morning database routine check, found that the undo Tablespace data file is too large, after querying the largest block,

9. master-Slave fault handling--session level parameter replication error

Introduction: Accept new items, master-slave database replication synchronization errors, ErrorCode1292 (invaliddatatype) Error sql:updatewavesetis_waved=0,level=1,source_tb_name=null, Source_id=null,update

Ten. ORA-30036 Fault handling ideas

introduction: Fault phenomenon for a province settlement library application in the run stored procedure found error ORA-30036: The following series of troubleshooting analyses were performed after UNABLETOEXTENDSEGMENTBY8INUNDOTABLESPACEUNDOTBS1: View undo tablespace