php操作mysql的類

exit(); }

[PHP]代碼

class mysql {
 private $db_host; //資料庫主機
 private $db_user; //資料庫使用者名稱
 private $private $ ; //資料庫使用者名稱密碼
 private $db_database; //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碼
 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 = false; //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，因為當有問題時使用者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();
 }

 /*資料庫連線*/
 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 {
 //即使連結
 $this->conn = mysql_connect($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;
 $this->query($sqlDatabase);
 }

 /*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() {
 $this->query("show databases");
 echo "現有資料庫：" . $amount = $this->db_num_rows($rs);
 echo "";
 $i = 1;
 while ($row = $this->fetch_array($rs)) {
 echo "$i $row[Database]";
 echo "";
 $i ;
 }
 }

 //以陣列形式傳回主機中所有資料庫名稱
 public function databases() {
 $rsPtr = mysql_list_dbs($this->conn);
 $i = 0;
 $cnt = mysql_num_rows($rsPtr);
 while ($i  $rs[] = mysql_db_name($rsPtr, $i);
 $i ;
 }
 return $rs;
 }

 /*查詢資料庫下所有的表*/
 public function show_tables($database_name) {
 $this->query("show tables");
 echo "現有資料庫：" . $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$row->content 欄位大小寫敏感
 mysql_fetch_object() object 用$row[id],$row[content] 欄位大小寫敏感
 */

 /*取得結果資料* /
 public function mysql_result_li() {
 return mysql_result($str);
 }

 /*取得記錄集,取得陣列-索引和關聯,使用$row['content' ] */
 public function fetch_array($resultt="") {
 if($resultt""){
 return mysql_fetch_array($resultt);
 }else{
 return mysql_fetch_array($this->result);
 }
 }

 //取得關聯陣列,使用$row['欄位名稱']
 public function fetch_assoc() {
 return mysql_fetch_assoc($this->result);
 }

 //取得數字索引陣列,使用$row[0],$row[1],$row[2]
 public function fetch_row() {
 return mysql_fetch_row($this->result);
 }

 //取得物件陣列,使用$row->content
 public function fetch_Object() {
 return mysql_fetch_object($this->result);
 }

 //簡化查詢select
 public function findall($table) {
 $this->query("SELECT * FROM $table");
 }

 //簡化查詢select
 public function select($table, $columnName = "*", $condition = '', $debug = '') {
 $condition = $condition ? ' Where ' . $condition : NULL;
 if ($debug) {
 echo "SELECT $columnName FROM $table $condition";
 } else {
 $this->query("SELECT $columnName FROM $table $condition");
 }
 }

 //簡化刪除del
 public function delete($table, $condition , $url = '') {
 if ($this->query("DELETE FROM $table WHERE $condition")) {
 if (!empty ($url))
 $this-> Get_admin_msg($url, '刪除成功！ ');
 }
 }

 //簡化插入insert
 public function insert($table, $columnName, $value, $url = '') {
 if ( $this->query("INSERT INTO $table ($columnName) VALUES ($value)")) {
 if (!empty ($url))
 $this->Get_admin_msg($url, '加成功！');
        }
    }

    //简化修改update
    public function update($table, $mod_content, $condition, $url = '') {
        //echo "UPDATE $table SET $mod_content WHERE $condition"; exit();
        if ($this->query("UPDATE $table SET $mod_content WHERE $condition")) {
            if (!empty ($url))
                $this->Get_admin_msg($url);
        }
    }

    /*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 "错误信息提示:";
            echo "";
            echo "";
            echo "错误号：12142";
            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($

}

//查詢欄位數

public function num_fields($table_name) {

//return mysql_num_fields($this->result);

$this->quesql_num_fields($this->result);

$this->quesql( "select * from $table_name");

echo "
";

echo "字段數：" . $total = mysql_num_fields($this->result);

echo "

 ";

for ($i = 0; $i print_r(mysql_fetch_field($this->result, $i));

}

echo "";

echo "
";

}

//取得MySQL 伺服器資訊

public function mysql_server($num = '') {

switch ($num) {

case 1 :

return mysql_get_server_info(); //MySQL 伺服器資訊

break;

case 2 :

return mysql_getget_info(); //取得主機資訊

break;

case 3 :

return mysql_get_client_info(); //取得MySQL 用戶端資訊

break;

case 客戶端資訊

break;

break;

break;

break;

break;

break;

break;

。 (); //取得MySQL 協議信息

break;

default :

return mysql_get_client_info(); //默認取得mysql版本信息

}

}

//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")) {

$ip = getenv("HTTP_CLIENT_IP"); if (getenv("HTTP_X_FORWARDED_FOR") &&strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")) {

$ip = getenv("HTTP_X_FORWARDED_getOR"); $ip = getenv("REMOTE_ADDR");

} else

if (isset ($_SERVER['REMOTE_ADDR'] ) && $_SERVER['REMOTE_ADDR'] &&strcasecmp($_SERVER['REMOTE_ADDR'], "unknown")) {

$ip = $_SERVER['REMOTE_ADDR'];

} else {

$ipipip = "unknown";

}

return ($ip);

}

function inject_check($sql_str) { //防止注入

$check =eregi('select|insert|update |delete|'|/*|*|../|./|union|into|load_file|outfile',$sql_str);

if ($check) {

echo "輸入非法注入內容！ ";

exit ();

} else {

return $sql_str;

} } function checkurl() { //檢查來路 if (preg_replace( "/https?://([^:/] ).*/i", "\1", $_SERVER['HTTP_REFERER']) !== preg_replace("/([^:] ).*/" , "\1", $_SERVER['HTTP_HOST'])) { header("Location: http://www.dareng.com");

}

}?>

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php, mysql