-
-
/*
- * filename:mysql資料庫連線類別
- * edit bbs.it-home.org
- */
- class mysql{
- private $db_host; //資料庫主機
- private $db_user; //資料庫使用者名稱
- private $db_pwd; //資料庫使用者名稱密碼
- private $db_databaseprivate $/ /資料庫名稱
- private $conn; //資料庫連線識別;
- private $result; //執行query指令的結果資源識別
- private $sql; //sql執行語句
- private $row ; //傳回的條目數
- private $coding; //資料庫編碼,GBK,UTF8,gb2312
- private $bulletin = true; //是否開啟錯誤記錄
- private $show_error = true; //測試階段,顯示所有錯誤,具有安全隱患,預設關閉
- private $is_error = false; //發現錯誤是否立即終止,預設true,建議不啟用,因為當有問題時用戶什麼也看不到是很苦惱的
- /*建構子*/
- public function __construct($db_host,$db_user,$db_pwd,$db_database,$conn,$coding){
- $this->db_host=$db_host$this->db_user=$db_user;
- $this->db_pwd = $db_pwd;
- $this->db_database=$db_database;
- $this->conn=$conn;
- $this->coding=$coding;
- $this->connect();
- }
- /*資料庫連接*/
- public function connect()
- {
- if( $this->conn=="pconn"){
- //永久連結
- $this->conn=mysql_pconnect($this->db_host,$this->db_user,$this->db_pwd);
- }else{
- //即時連結
- $this->conn=mysql_connect($this->db_host,$this->db_user,$this->db_pwd);
- }
- if (!mysql_select_db($this->db_database,$this->conn)){
- if($this->show_error){
- $this->show_error("資料庫不可用:",$this-> db_database);
- }
- }
- mysql_query("SET NAMES $this->coding");
- }
- /*資料庫執行語句,可執行查詢新增修改刪除等任何sql語句*/
- public function query($sql)
- {
- if($sql == ""){
- $this->show_error("sql語句錯誤:","sql查詢語句為空");}
- $this->sql = $sql;
- $result = mysql_query($this->sql,$this->conn);
- if(!$result){
- //調試中使用,sql語句出錯時會自動列印出來
- if($this->show_error){
- $this->show_error("錯誤sql語句:",$this->sql);
- }
- }else{
- $this->result = $result;
- }
- return $this->result;
- }
- /*建立新增新的資料庫*/
- public function create_database($database_name){
- $database=$database_name;
- $sqlDatabase = 'create database '.$database;
- $this->query($DataDatabase);}
- /*查詢伺服器所有資料庫*/
- //將系統資料庫與使用者資料庫分開,更直覺的顯示?
- public function show_databases(){
- $rs=$this->query("show databases");
- echo "现有数据库:".$amount =$this->db_num_rows($rs);
- echo "
";
- $i=1;
- while($row = $this->fetch_array($rs)){
- echo "$i $row[Database]";
- echo "
";
- $i++;
- }
- }
- //以数组形式返回主机中所有数据库名
- public function databases()
- {
- $rsPtr=mysql_list_dbs($this->conn);
- $i=0;
- $cnt=mysql_num_rows($rsPtr);
- while($i<$cnt)
- {
- $rs[]=mysql_db_name($rsPtr,$i);
- $i++;
- }
- return $rs;
- }
- /*查询数据库下所有的表*/
- function show_tables($database_name){
- $this->query("show tables");
- echo "现有数据库:".$amount = $this->db_num_rows($rs);
- echo "
";
- $i=1;
- while($row = $this->fetch_array($rs)){
- $columnName="Tables_in_".$database_name;
- echo "$i $row[$columnName]";
- echo "
";
- $i++;
- }
- }
- /*
- mysql_fetch_row() array $row[0],$row[1],$row[2]
- mysql_fetch_array() array $row[0] 或 $row[id]
- mysql_fetch_assoc() array 用$row->content 字段大小写敏感
- mysql_fetch_object() object 用$row[id],$row[content] 字段大小写敏感
- */
- /*取得结果数据*/
- public function mysql_result_li()
- {
- return mysql_result($str);
- }
- /*取得记录集,获取数组-索引和关联,使用$row['content'] */
- public function fetch_array()
- {
- return mysql_fetch_array($this->result);
- }
- //获取关联数组,使用$row['字段名']
- public function fetch_assoc()
- {
- return mysql_fetch_assoc($this->result);
- }
- //获取数字索引数组,使用$row[0],$row[1],$row[2]
- public function fetch_row()
- {
- return mysql_fetch_row($this->result);
- }
- //获取对象数组,使用$row->content
- public function fetch_Object()
- {
- return mysql_fetch_object($this->result);
- }
- //简化查询select
- public function findall($table)
- {
- $this->query("SELECT * FROM $table");
- }
- //简化查询select
- public function select($table,$columnName,$condition)
- {
- if($columnName==""){
- $columnName="*";
- }
- $this->query("SELECT $columnName FROM $table $condition");
- }
- //简化删除del
- public function delete($table,$condition){
- $this->query("DELETE FROM $table WHERE $condition");
- }
- //简化插入insert
- public function insert($table,$columnName,$value){
- $this->query("INSERT INTO $table ($columnName) VALUES ($value)");
- }
- //简化修改update
- public function update($table,$mod_content,$condition){
- $this->query("UPDATE $table SET $mod_content WHERE $condition");
- }
- /*取得上一步 INSERT 操作产生的 ID*/
- public function insert_id(){
- return mysql_insert_id();
- }
- //指向确定的一条数据记录
- public function db_data_seek($id){
- if($id>0){
- $id=$id-1;
- }
- if(!@mysql_data_seek($this->result,$id)){
- $this->show_error("sql语句有误:", "指定的数据为空");
- }
- return $this->result;
- }
- // 根据select查询结果计算结果集条数
- public function db_num_rows(){
- if($this->result==null){
- if($this->show_error){
- $this->show_error("sql语句错误","暂时为空,没有任何内容!");
- }
- }else{
- return mysql_num_rows($this->result);
- }
- }
- // 根据insert,update,delete执行结果取得影响行数
- public function db_affected_rows(){
- return mysql_affected_rows();
- }
- //输出显示sql语句
- public function show_error($message="",$sql=""){
- if(!$sql){
- echo "".$message."";
- echo "
";
- }else{
- echo "
- echo "
";
- echo "
";
- echo "
";
- echo "错误号:12142";
- echo "
";
- echo "错误原因:".mysql_error()."
";
- echo "
";
- echo "".$message."";
- echo "
";
- echo "
".$sql." ";
- $ip=$this->getip();
- if($this->bulletin){
- $time = date("Y-m-d H:i:s");
- $message=$message."/r/n$this->sql"."/r/n客户IP:$ip"."/r/n时间 :$time"."/r/n/r/n";
- $server_date=date("Y-m-d");
- $filename=$server_date.".txt";
- $file_path="error/".$filename;
- $error_content=$message;
- //$error_content="错误的数据库,不可以链接";
- $file = "error"; //设置文件保存目录
- //建立文件夹
- if(!file_exists($file)){
- if(!mkdir($file,0777)){
- //默认的 mode 是 0777,意味着最大可能的访问权
- die("upload files directory does not exist and creation failed");
- }
- }
- //建立txt日期文件
- if(!file_exists($file_path)){
- //echo "建立日期文件";
- fopen($file_path,"w+");
- //首先要确定文件存在并且可写
- if (is_writable($file_path))
- {
- //使用添加模式打开$filename,文件指针将会在文件的开头
- if (!$handle = fopen($file_path, 'a'))
- {
- echo "不能打开文件 $filename";
- exit;
- }
- //将$somecontent写入到我们打开的文件中。
- if (!fwrite($handle, $error_content))
- {
- echo "不能写入到文件 $filename";
- exit;
- }
- //echo "文件 $filename 写入成功";
- echo "——错误记录被保存!";
- //关闭文件
- fclose($handle);
- } else {
- echo "文件 $filename 不可写";
- }
- }else{
- //首先要确定文件存在并且可写
- if (is_writable($file_path))
- {
- //使用添加模式打开$filename,文件指针将会在文件的开头
- if (!$handle = fopen($file_path, 'a'))
- {
- echo "不能打开文件 $filename";
- exit;
- }
- //将$somecontent写入到我们打开的文件中。
- if (!fwrite($handle, $error_content))
- {
- echo "不能写入到文件 $filename";
- exit;
- }
- //echo "文件 $filename 写入成功";
- echo "——错误记录被保存!";
- //关闭文件
- fclose($handle);
- } else {
- echo "文件 $filename 不可写";
- }
- }
- }
- echo "
";
- if($this->is_error){
- exit;
- }
- }
- echo "
";
- echo "";
- echo "
";
- }
- //釋放結果集
- public function free(){
- @ mysql_free_result($this->result);
- }
- //資料庫選擇
- public function select_db($db_database){
- return mysql_select_db($db_database);
-
- }
- 查詢欄位數
- public function num_fields($table_name){
- //return mysql_num_fields($this->result);
- $this->query("select * from $table_name");
- $this->query("select * from $table_name");
- echo "
";
- echo "字段數:".$total = mysql_num_fields($this->result);
- echo "
";
- for ($i=0; $iprint_r(mysql_fetch_field($this->result,$i) );
- }
- echo "";
- echo "
";
- }
- //取得MySQL 伺服器資訊
- public function mysql_server($num=''){
- switch ($num){
- case 1 :
- returnitch ($num){
- case 1 :
- return mysql_get_server_info(); //MySQL 伺服器資訊
- break;
- case 2 :
- return mysql_get_host_info(); //取得MySQL 主機資訊
- break;case 3 getturn_rem_re getturn_re_mL getturn_m3 getturn_re_m3 getturn_re_mL getturn_re_m. (); //取得MySQL 用戶端資訊
- break;
- case 4 :
- return mysql_get_proto_info(); //取得MySQL 協定資訊
- break;
- default:}
- }
- //析構函數,自動關閉資料庫,垃圾回收機制
- public function __destruct()
- {
- if (!empty($this->result)){
- $this->free();
- }
- mysql_close($this->conn);
- }//function __destruct();
- /*取得客戶端真實的IP位址*/
- function getip(){
- if(getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")){
- $ip = getenv("HTTP_CLIENT_IP");
- }
- else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARD-FnowOR" $ip = getenv("HTTP_X_FORWARDED_FOR");
- }
- else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
- {ip = getenv("REMOTE_ADDR");
- }
- else if (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR', "unkn" )){
- $ip = $_SERVER['REMOTE_ADDR'];
- }
- else{
- $ip = "unknown";
- }
- return($ip);
- }
- }
- ?>
-
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