


PHP website development plan (a must-read for new developers)_PHP tutorial
1. Development members
a) Project Manager
b) Page art
c) Page development
d)Server-side program development
e) System and data management
f)Testing and version control
2. Simple process for website team development
3. Development tools and environment
a) Server configuration
i. WEB server: FreeBSD6.1+Apache2.0+PHP5.0, SVN version control service (test machine only).
ii. Database server: WIN2003 server+SQL server 2000+MySQL5.0, CLUSTERED SERVER cluster service, mail server.
iii. 100M/1000M switch
b) Development tools
i. Front desk: Macromedia flash 8.0, Macromedia Dreamweaver 8.0, Adobe photoshop CS
ii. Backend: Zend Studio 5.2, SQL Server Enterprise Manager, PhpMyAdmin
4. Technical Rules
a) Browser compatibility strategy: Compatible with IE5.0 or above, and compatible with FireFOX2.0 or above browsers.
b) Search engine optimization: Focus on baidu, Google, and Yahoo search optimization and create a clear website map.
c) Character encoding rules: Chinese websites always adopt the GB2312 character standard.
d) File and folder naming: To be compatible with win32 and unix systems, lowercase letters are always used for naming.
e) Public file naming rules:
i. Default homepage: index.htm, index.html, index.php
ii. Main CSS file: style.css
iii. Main JS file: main.js
iv. Main program configuration file: config.php
f) Unified naming of public file directories
i. Picture directory: /images or /pic
ii. CSS style directory: /css
iii. JS script program directory:/js
iv. Template file directory: /tpl
v. Class or component directory: /class or /lib
g) Page script specifications: Uniformly use JavaScript
h) Class, function, and variable names in the code: use similar English word names, such as: DefaultClass or default_class
i) Code comment rules: All functions or procedures in the program must be accurately commented.
j) Database related rules
i. Data table and field naming rules: Name with all lowercase letters, and classify the naming prefix, such as: user table group, user_passport, user_info, user_service….
ii. Date type field: Unix timestamp is used uniformly, char(12)
iii. Primary key naming: All tables must have a primary key named after id.
k) Template component rules: Use compatible versions of Smarty and unified cache directories to facilitate permission control under Unix.
l) Database virtual layer: Use Adodb or Pdo uniformly, and SQL statements must be compatible with existing mainstream database rules.
m) Factory mode development rules: Develop or inherit component classes with comm.php as the center, and uniformly control file calling IO and class instantiation.
n) Object-oriented development rules: All functions must exist in the form of class ---> procedures.
o) SQL encapsulation rules: All SQL statements and database queries must exist in the process.
p) URL redirection rules: In order to optimize search engines, try to use Apache's mod_rewrite module to beautify the URL, such as: http://www.BkJia.com/action.php?id=123 converted to: http://www.BkJia .com/action/id/123 or http://www.BkJia.com/action/id_123.html
5. Website security and maintenance strategy
a) Server and database security:
i. Establish a complete virus defense mechanism, install a firewall, and close any unnecessary ports and services on the server.
ii. Manage user permissions in a unified manner, regularly track user and system events, and check system logs regularly.
b) Disaster recovery and backup mechanism:
i. Establish a database cluster and keep at least one server synchronized with data to ensure that the database system can automatically transfer to a normal server for stable operation when an accident occurs.
ii. Back up files and data regularly and save data and files through various methods.
c) Program security policy:
i. SQL injection prevention: Resolutely filter out unforeseen illegal characters, and strictly check SQL statements for database queries and updates.
ii. Do not use third-party source code from unknown sources, and do not easily copy unknown code to the server.

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl


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