1. lass cls_mysql{
2. var $querynum = 0;
3. var $link;
4. var $histories;
5. var $dbhost;
6. var $dbuser;
7. var $dbpw;
8. var $dbcharset;
9. var $pconnect;
10. var $tablepre;
11. var $time;
12. var $goneaway = 5;
13. function connect($dbhost, $dbuser, $dbpw, $dbname = '', $dbcharset = '', $pconnect = 0, $tablepre='', $time = 0) {
14. $this->dbhost = $dbhost;
15. $this->dbuser = $dbuser;
16. $this->dbpw = $dbpw;
17. $this->dbname = $dbname;
18. $this->dbcharset = $dbcharset;
19. $this->pconnect = $pconnect;
20. $this->tablepre = $tablepre;
21. $this->time = $time;
22. if($pconnect) {
23. if(!$this->link = mysql_pconnect($dbhost, $dbuser, $dbpw)) {
24. $this->halt('can not connect to mysql server');
25. }
26. } else {
27. if(!$this->link = mysql_connect($dbhost, $dbuser, $dbpw)) {
28. $this->halt('can not connect to mysql server');
29. }
30. }
31. if($this->version() > '4.1') {
32. if($dbcharset) {
33. mysql_query("set character_set_connection=".$dbcharset.", character_set_results=".$dbcharset.", character_set_client=binary", $this->link);
34. }
35. if($this->version() > '5.0.1') {
36. mysql_query("set sql_mode=''", $this->link);
37. }
38. }
39. if($dbname) {
40. mysql_select_db($dbname, $this->link);
41. }
42. }
43. function fetch_array($query, $result_type = mysql_assoc) {
44. return mysql_fetch_array($query, $result_type);
45. }
46. function result_first($sql) {
47. $query = $this->query($sql);
48. return $this->result($query, 0);
49. }
50. function fetch_first($sql) {
51. $query = $this->query($sql);
52. return $this->fetch_array($query);
53. }
54. function fetch_all($sql, $id = '') {
55. $arr = array();
56. $query = $this->query($sql);
57. while($data = $this->fetch_array($query)) {
58. $id ? $arr[$data[$id]] = $data : $arr[] = $data;
59. }
60. return $arr;
61. }
62. function cache_gc() {
63. $this->query("delete from {$this->tablepre}sqlcaches where expiry<$this->time");
64. }
65. function query($sql, $type = '', $cachetime = false) {
66. $func = $type == 'unbuffered' && @function_exists('mysql_unbuffered_query') ? 'mysql_unbuffered_query' : 'mysql_query';
67. if(!($query = $func($sql, $this->link)) && $type != 'silent') {
68. $this->halt('mysql query error', $sql);
69. }
70. $this->querynum++;
71. $this->histories[] = $sql;
72. return $query;
73. }
74. function affected_rows() {
75. return mysql_affected_rows($this->link);
76. }
77. function error() {
78. return (($this->link) ? mysql_error($this->link) : mysql_error());
79. }
80. function errno() {
81. return intval(($this->link) ? mysql_errno($this->link) : mysql_errno());
82. }
83. function result($query, $row) {
84. $query = @mysql_result($query, $row);
85. return $query;
86. }
87. function num_rows($query) {
88. $query = mysql_num_rows($query);
89. return $query;
90. }
91. function num_fields($query) {
92. return mysql_num_fields($query);
93. }
94. function free_result($query) {
95. return mysql_free_result($query);
96. }
97. function insert_id() {
98. return ($id = mysql_insert_id($this->link)) >= 0 ? $id : $this->result($this->query("select last_insert_id()"), 0);
99. }
100. function fetch_row($query) {
101. $query = mysql_fetch_row($query);
102. return $query;
103. }
104. function fetch_fields($query) {
105. return mysql_fetch_field($query);
106. }
107. function version() {
108. return mysql_get_server_info($this->link);
109. }
110. function close() {
111. return mysql_close($this->link);
112. }
113. function halt($message = '', $sql = '') {
114. $error = mysql_error();
115. $errorno = mysql_errno();
116. if($errorno == 2006 && $this->goneaway-- > 0) {
117. $this->connect($this->dbhost, $this->dbuser, $this->dbpw, $this->dbname, $this->dbcharset, $this->pconnect, $this->tablepre, $this->time);//开源代码phpfensi.com
118. $this->query($sql);
119. } else {
120. $s = '<b>error:</b>'.$error.'<br />';
121. $s .= '<b>errno:</b>'.$errorno.'<br />';
122. $s .= '<b>sql:</b>:'.$sql;
123. exit($s);
124. }
125. }
126. }