Create a Bug Tracking System Early and Not Often The earlier people get used to using a bug tracking system the better. If you are 3/4 through a project and then install a bug tracking system it won't be used. You need to install a bug tracking system early so people will use it.
Programmers generally resist bug tracking, yet when used correctly it can really help a project: Problems aren't dropped on the floor. Problems are automatically routed to responsible individuals. The lifecycle of a problem is tracked so people can argue back and forth with good information. Managers can make the big schedule and staffing decisions based on the number of and types of bugs in the system. Configuration management has a hope of matching patches back to the problems they fix. QA and technical support have a communication medium with developers. Not sexy things, just good solid project improvements.
FYI, it's not a good idea to reward people by the number of bugs they fix :-)
Source code control should be linked to the bug tracking system. During the part of a project where source is frozen before a release only checkins accompanied by a valid bug ID should be accepted. And when code is changed to fix a bug the bug ID should be included in the checkin comments.
Sources Several projects have found DDTS a workable system (I 've not verified this link for this PHP release, DDTS may not work for PHP). There is also a GNU bug tracking system available. Roll your own is a popular option but using an existing system seems more cost efficient.
Honor Responsibilities Responsibility for software modules is scoped. Modules are either the responsibility of a particular person or are common. Honor this division of responsibility. Don't go changing things that aren't your responsibility to change. Only mistakes and hard feelings will result.
Face it, if you don't own a piece of code you can't possibly be in a position to change it. There's too much context. Assumptions seemingly reasonable to you may be totally wrong. If you need a change simply ask the responsible person to change it. Or ask them if it is OK to make such-n-such a change. If they say OK then go ahead, otherwise holster your editor.
Every rule has exceptions. If it's 3 in the morning and you need to make a change to make a deliverable then you have to do it. If someone is on vacation and no one has been assigned their module then you have to do it. If you make changes in other people's code try and use the same style they have adopted.
Programmers need to mark with comments code that is particularly sensitive to change. If code in one area requires changes to code in an another area then say so. If changing data formats will cause conflicts with persistent stores or remote message sending then say so. If you are trying to minimize memory usage or achieve some other end then say so. Not everyone is as brilliant as you.
The worst sin is to flit through the system changing bits of code to match your coding style. If someone isn't coding to the standards then ask them or ask your manager to ask them to code to the standards. Use common courtesy.
Code with common responsibility should be treated with care. Resist making radical changes as the conflicts will be hard to resolve. Put comments in the file on how the file should be extended so everyone will follow the same rules. Try and use a common structure in all common files so people don't have to guess on where to find things and how to make changes. Checkin changes as soon as possible so conflicts don't build up.
As an aside, module responsibilities must also be assigned for bug tracking purposes.
PHP文件扩展名我见过许多种PHP文件的扩展名（.html, .php, .php3, .php4, .phtml, .inc, .class...）
所有浏览者可见页面使用.html
所有类、函数库文件使用.php
理由
扩展名描述的是那种数据是用户将会收到的。PHP是解释为HTML的。
不要不可思议的数字一个在源代码中使用了的赤裸裸的数字是不可思议的数字，因为包括作者，在三个月内，没人它的含义。例如：
if (22 == $foo) { start_thermo_nuclear_war(); } else if (19 == $foo) { refund_lotso_money(); } else if (16 == $foo) { infinite_loop(); } else { cry_cause_im_lost(); } 在上例中22和19的含义是什么呢？如果一个数字改变了，或者这些数字只是简单的错误，你会怎么想？
使用不可思议的数字是该程序员是业余运动员的重要标志，这样的程序员从来没有在团队环境中工作过，
又或者是为了维持代码而不得不做的，否则他们永远不会做这样的事。
你应该用define()来给你想表示某样东西的数值一个真正的名字，而不是采用赤裸裸的数字，例如： define("PRESIDENT_WENT_CRAZY", "22"); define("WE_GOOFED", "19"); define("THEY_DIDNT_PAY", "16"); if (PRESIDENT_WENT_CRAZY == $foo) { start_thermo_nuclear_war(); } else if (WE_GOOFED == $foo) { refund_lotso_money(); } else if (THEY_DIDNT_PAY == $foo) { infinite_loop(); } else { happy_days_i_know_why_im_here(); } 现在不是变得更好了么？