BugFree是借鉴微软的研发流程和Bug管理理念，使用PHP+MySQL独立写出的一个Bug管理 系统。简单实用、免费并且开放源代码(遵循GNU GPL)。
Bugfree的安装：引用文档http://www.cnblogs.com/emilyzhang68/archive/2011/08/24/2152433.html ，下面是对该文档的补充说明：
以管理员身份安装xampp，安装到尾声的时候会询问是否设置为服务(方便每次开机自动运行)，选择Yes。
接着，xampp的设置脚本会启动，完成后提示是否成功。最后提示是否现在启动xampp control panel。点击Yes，出现下图：
我使用的是xampp-win32-1.8.2-3-VC9-installer，如果apache为启动，如果是80端口被占用，直接改端口，鼠标点击上面的config按钮，打开相应的conf文件修改其他端口，然后重启服务。
如果已经安装过mysql、php等，请不要勾选，否则会出现问题。
Openssl也不是必须安装的，如果使用https，必须要安装openssl，openssl的64位要自己编译，采用vs的64位命令行工具，首先要下载ActivePerl，可到http://www.activestate.com/ActivePerl，再下载openssl；用vs的64位命令行工具，切换到openssl的目录下，执行下面的命令：perl Configure VC-WIN64A ms\do_win64a nmake -f ms\ntdll.mak，切记要使用vs64位命令行工具。如下图所示：
安装xampp后，将bugfree的安装包解压到xampp的htdocs目录下，完整的目录是
C:\xampp\htdocs\bugfree，将bugfree目录下的Config.inc.Sample.php复制一份，改名为Config.inc，其中，25行以下这几行是关于数据库的设置，如果安装过mysql，在这里设置一下数据库连接的密码、用户名等
/* 3. Define the username and password of the BugFree database. */
$_CFG['DB']['User'] = 'root';
$_CFG['DB']['Password'] = '1234';
$_CFG['DB']['Host'] = 'localhost';
$_CFG['DB']['Database'] = 'bugfree2';
$_CFG['DB']['TablePrefix'] = 'bf_';
$_CFG['DBCharset'] = 'UTF8';
如果安装过mysql，出现上面的mysql数据库未激活，不用理会，但是上面的数据库连接设置参数一定要设置，否则无法安装bugfree。
访问https://localhost/xampp/bugfree，如果报以下错误：Fatal error: Call-time pass-by-reference has been removed in，意思是调用时引用传参已经被移除了，
就是不能通过function(&$a)这种方式传参调用函数. 以前的php代码在升级到5.4版本的php可能会出现这种错误:改正方法，调用时直接传参就行了： foo($var) .这个错误出现的文件名：include下的class目录的XmlParse.classphp，一下是我修改过的php文件。
1 <?php
2 error_reporting(E_ERROR | E_PARSE);
3
4 function & XML_unserialize(&$xml){
5 $xml_parser = new XML();
6 $data = &$xml_parser->parse($xml);
7 $xml_parser->destruct();
8 return $data;
9 }
10
11 function & XML_serialize(&$data, $level = 0, $prior_key = NULL){
12 if($level == 0){ ob_start(); echo '<?xml version="1.0" ?>',"\n"; }
13 while(list($key, $value) = each($data))
14 if(!strpos($key, ' attr')) #if it's not an attribute
15 #we don't treat attributes by themselves, so for an emptyempty element
16 # that has attributes you still need to set the element to NULL
17
18 if(is_array($value) and array_key_exists(0, $value)){
19 XML_serialize($value, $level, $key);
20 }else{
21 $tag = $prior_key ? $prior_key : $key;
22 echo str_repeat("\t", $level),'<',$tag;
23 if(array_key_exists("$key attr", $data)){ #if there's an attribute for this element
24 while(list($attr_name, $attr_value) = each($data["$key attr"]))
25 echo ' ',$attr_name,'="',htmlspecialchars($attr_value),'"';
26 reset($data["$key attr"]);
27 }
28
29 if(is_null($value)) echo " />\n";
30 elseif(!is_array($value)) echo '>',htmlspecialchars($value),"</$tag>\n";
31 else echo ">\n",XML_serialize($value, $level+1),str_repeat("\t", $level),"</$tag>\n";
32 }
33 reset($data);
34 if($level == 0){ $str = &ob_get_contents(); ob_end_clean(); return $str; }
35 }
36
37 class XML{
38 var $parser; #a reference to the XML parser
39 var $document; #the entire XML structure built up so far
40 var $parent; #a pointer to the current parent - the parent will be an array
41 var $stack; #a stack of the most recent parent at each nesting level
42 var $last_opened_tag; #keeps track of the last tag opened.
43
44 function XML(){
45 $this->parser = &xml_parser_create();
46 xml_parser_set_option($this->parser, XML_OPTION_CASE_FOLDING, false);
47 xml_set_object($this->parser, $this);
48 xml_set_element_handler($this->parser, 'open','close');
49 xml_set_character_data_handler($this->parser, 'data');
50 }
51 function destruct(){ xml_parser_free($this->parser); }
52 function & parse(&$data){
53 $this->document = array();
54 $this->stack = array();
55 $this->parent = &$this->document;
56 return xml_parse($this->parser, $data, true) ? $this->document : NULL;
57 }
58 function open(&$parser, $tag, $attributes){
59 $this->data = ''; #stores temporary cdata
60 $this->last_opened_tag = $tag;
61 if(is_array($this->parent) and array_key_exists($tag,$this->parent)){ #if you've seen this tag before
62 if(is_array($this->parent[$tag]) and array_key_exists(0,$this->parent[$tag])){ #if the keys are numeric
63 #this is the third or later instance of $tag we've come across
64 $key = count_numeric_items($this->parent[$tag]);
65 }else{
66 #this is the second instance of $tag that we've seen. shift around
67 if(array_key_exists("$tag attr",$this->parent)){
68 $arr = array('0 attr'=>&$this->parent["$tag attr"], &$this->parent[$tag]);
69 unset($this->parent["$tag attr"]);
70 }else{
71 $arr = array(&$this->parent[$tag]);
72 }
73 $this->parent[$tag] = &$arr;
74 $key = 1;
75 }
76 $this->parent = &$this->parent[$tag];
77 }else{
78 $key = $tag;
79 }
80 if($attributes) $this->parent["$key attr"] = $attributes;
81 $this->parent = &$this->parent[$key];
82 $this->stack[] = &$this->parent;
83 }
84 function data(&$parser, $data){
85 if($this->last_opened_tag != NULL) #you don't need to store whitespace in between tags
86 $this->data .= $data;
87 }
88 function close(&$parser, $tag){
89 if($this->last_opened_tag == $tag){
90 $this->parent = $this->data;
91 $this->last_opened_tag = NULL;
92 }
93 array_pop($this->stack);
94 if($this->stack) $this->parent = &$this->stack[count($this->stack)-1];
95 }
96 }
97 function count_numeric_items(&$array){
98 return is_array($array) ? count(array_filter(array_keys($array), 'is_numeric')) : 0;
99 }
100
101 ?>
102
错误：php Only variables should be passed by reference in，参数是引用传递的，5.3以上默认只能传递具体的变量，而不能通过函数返回值
原来代码：$ProjectInfo = array_pop(testGetProjectList("ProjectID = '{$ProjectID}'"));
改正后的------ FuncModel.inc.php 46行
$Result = testGetProjectList("ProjectID = '{$ProjectID}'");
$ProjectInfo = array_pop($Result);