discuz7 PHPMysql操作类

代码如下:

1. <?php
   
2. /*
   
3. * MySql数据库连接类
   
4. * mysql.class.php 2009.04.15 by Hackbaby
   
5. */
   
6. class dbstuff {
   
7. var $version = '';
   
8. var $querynum = 0;
   
9. var $link = null;
   
10. //连接数据库
    
11. function connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect = 0, $halt = TRUE, $dbcharset2 = '') {
    
12. $conn = empty($pconnect) ? 'mysql_connect' : 'mysql_pconnect';
    
13. if (!$this->link = @$conn($dbhost, $dbuser, $dbpw, 1)) {
    
14. $halt && $this->halt('Can not connect to MySQL server');
    
15. } else {
    
16. if($this->version() > '4.1') {
    
17. global $charset, $dbcharset;
    
18. $dbcharset = $dbcharset2 ? $dbcharset2 : $dbcharset;
    
19. $dbcharset = !$dbcharset && in_array(strtolower($charset), array('gbk', 'big5', 'utf-8')) ? str_replace('-', '', $charset) : $dbcharset;
    
20. $serverset = $dbcharset ? 'character_set_connection='.$dbcharset.', character_set_results='.$dbcharset.', character_set_client=binary' : '';
    
21. $serverset .= $this->version() > '5.0.1' ? ((empty($serverset) ? '' : ',').'sql_mode=\'\'') : '';
    
22. $serverset && mysql_query("SET $serverset", $this->link);
    
23. }
    
24. $dbname && @mysql_select_db($dbname, $this->link);
    
25. }
    
26. 
    
27. }
    
28. //选择数据库
    
29. function select_db($dbname) {
    
30. return mysql_select_db($dbname, $this->link);
    
31. }
    
32. //数据库执行后的返回方法
    
33. function fetch_array($query, $result_type = MYSQL_ASSOC) {
    
34. return mysql_fetch_array($query, $result_type);
    
35. }
    
36. //返回fetch_array方法执行后的返回值
    
37. function fetch_first($sql) {
    
38. return $this->fetch_array($this->query($sql));
    
39. }
    
40. //返回result方法执行后的返回值
    
41. function result_first($sql) {
    
42. return $this->result($this->query($sql), 0);
    
43. }
    
44. //执行对数据库的操作
    
45. function query($sql, $type = '') {
    
46. global $debug, $discuz_starttime, $sqldebug, $sqlspenttimes;
    
47. //判断debug调试
    
48. if(defined('SYS_DEBUG') && SYS_DEBUG) {
    
49. @include_once WEB_ROOT.'./include/debug.func.php';
    
50. sqldebug($sql);
    
51. }
    
52. //
    
53. $func = $type == 'UNBUFFERED' && @function_exists('mysql_unbuffered_query') ?
    
54. 'mysql_unbuffered_query' : 'mysql_query';
    
55. if(!($query = $func($sql, $this->link))) {
    
56. if(in_array($this->errno(), array(2006, 2013)) && substr($type, 0, 5) != 'RETRY') {
    
57. $this->close();
    
58. require './config.inc.php';
    
59. $this->connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect, true, $dbcharset);
    
60. $this->query($sql, 'RETRY'.$type);
    
61. } elseif($type != 'SILENT' && substr($type, 5) != 'SILENT') {
    
62. $this->halt('MySQL Query Error', $sql);
    
63. }
    
64. }
    
65. //查询条数加1
    
66. $this->querynum++;
    
67. return $query;
    
68. }
    
69. //取得前一次 MySQL 操作所影响的记录行数
    
70. function affected_rows() {
    
71. return mysql_affected_rows($this->link);
    
72. }
    
73. //数据库的文本错误提示
    
74. function error() {
    
75. return (($this->link) ? mysql_error($this->link) : mysql_error());
    
76. }
    
77. //返回上一个 MySQL 操作中的错误信息的数字编码
    
78. function errno() {
    
79. return intval(($this->link) ? mysql_errno($this->link) : mysql_errno());
    
80. }
    
81. //返回数据库操作结果
    
82. function result($query, $row = 0) {
    
83. $query = @mysql_result($query, $row);
    
84. return $query;
    
85. }
    
86. //返回数据库查询等操作的数目
    
87. function num_rows($query) {
    
88. $query = mysql_num_rows($query);
    
89. return $query;
    
90. }
    
91. //取得结果集中字段的数目
    
92. function num_fields($query) {
    
93. return mysql_num_fields($query);
    
94. }
    
95. //释放结果内存
    
96. function free_result($query) {
    
97. return mysql_free_result($query);
    
98. }
    
99. //取得上一步 INSERT 操作产生的 ID
    
100. function insert_id() {
     
101. return ($id = mysql_insert_id($this->link)) >= 0 ? $id : $this->result($this->query("SELECT last_insert_id()"), 0);
     
102. }
     
103. //以数组的形式返回查询结果
     
104. function fetch_row($query) {
     
105. $query = mysql_fetch_row($query);
     
106. return $query;
     
107. }
     
108. //从结果集中取得列信息并作为对象返回
     
109. function fetch_fields($query) {
     
110. return mysql_fetch_field($query);
     
111. }
     
112. //获取Mysql的版本
     
113. function version() {
     
114. if(empty($this->version)) {
     
115. $this->version = mysql_get_server_info($this->link);
     
116. }
     
117. return $this->version;
     
118. }
     
119. //关闭连接
     
120. function close() {
     
121. return mysql_close($this->link);
     
122. }
     
123. //错误提示
     
124. function halt($message = '', $sql = '') {
     
125. define('CACHE_FORBIDDEN', TRUE);
     
126. require_once WEB_ROOT . './include/db_mysql_error.inc.php';
     
127. }
     
128. }
     
129. ?>
     

复制代码