<?PHP
class MysqL {
private $db_host; //数据库主机
private $db_database; //数据库名
private $conn; //数据库连接标识;
private $result; //执行query命令的结果资源标识
private $row; //返回的条目数
private $coding; //数据库编码，GBK,UTF8,gb2312
private $bulletin = true; //是否开启错误记录
private $show_error = false; //测试阶段，显示所有错误,具有安全隐患,默认关闭
private $is_error = false; //发现错误是否立即终止,默认true,建议不启用，因为当有问题时用户什么也看不到是很苦恼的
/*构造函数*/
public function __construct($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;
$this->connect();
}
/*数据库连接*/
public function connect() {
if ($this->conn == "pconn") {
//永久链接
$this->conn = MysqL_pconnect($this->db_host,$this->db_user,$this->db_pwd);
} else {
//即使链接
$this->conn = MysqL_connect($this->db_host,$this->db_pwd);
}
if (!MysqL_select_db($this->db_database,$this->conn)) {
if ($this->show_error) {
$this->show_error("数据库不可用：",$this->db_database);
}
}
MysqL_query("SET NAMES $this->coding");
}
/*数据库执行语句，可执行查询添加修改删除等任何sql语句*/
public function query($sql) {
if ($sql == "") {
$this->show_error("sql语句错误：","SQL查询语句为空");
}
$result = MysqL_query($this->sql,$this->conn);
if (!$result) {
if ($this->show_error) {
$this->show_error("错误sql语句：",$this->sql);
}
} else {
$this->result = $result;
}
return $this->result;
}
public function create_database($database_name) {
$database = $database_name;
$sqlDatabase = 'create database ' . $database;
$this->query($sqlDatabase);
}
public function show_databases() {
$this->query("show databases");
echo "现有数据库：" . $amount = $this->db_num_rows($rs);
echo "<br />";
$i = 1;
while ($row = $this->fetch_array($rs)) {
echo "$i $row[Database]";
echo "<br />";
$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 $rs;
}
public function show_tables($database_name) {
$this->query("show tables");
echo "现有数据库：" . $amount = $this->db_num_rows($rs);
echo "<br />";
$i = 1;
while ($row = $this->fetch_array($rs)) {
$columnName = "Tables_in_" . $database_name;
echo "$i $row[$columnName]";
echo "<br />";
$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($resultt="") {
if($resultt<>""){
return MysqL_fetch_array($resultt);
}else{
return MysqL_fetch_array($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[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 = '',$debug = '') {
$condition = $condition ? ' Where ' . $condition : NULL;
if ($debug) {
echo "SELECT $columnName FROM $table $condition";
} else {
$this->query("SELECT $columnName FROM $table $condition");
}
}
//简化删除del
public function delete($table,$condition,$url = '') {
if ($this->query("DELETE FROM $table WHERE $condition")) {
if (!empty ($url))
$this->Get_admin_msg($url,'删除成功！');
}
}
//简化插入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,'添加成功！');
}
}
//简化修改update
public function update($table,$mod_content,$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();
}
public function show_error($message = "",$sql = "") {
if (!$sql) {
echo "<font color='red'>" . $message . "</font>";
echo "<br />";
} else {
echo "<fieldset>";
echo "<legend>错误信息提示:</legend><br />";
echo "<div font-size:14px; clear:both; font-family:Verdana,Arial,Helvetica,sans-serif;'>";
echo "<div height:20px; background:#000000; border:1px #000000 solid'>";
echo "<font color='white'>错误号：12142</font>";
echo "</div><br />";
echo "错误原因：" . MysqL_error() . "<br /><br />";
echo "<div height:20px; background:#FF0000; border:1px #FF0000 solid'>";
echo "<font color='white'>" . $message . "</font>";
echo "</div>";
echo "<font color='red'><pre>" . $sql . "</pre></font>";
$ip = $this->getip();
if ($this->bulletin) {
$time = date("Y-m-d H:i:s");
$message = $message . "rn$this->sql" . "rn客户IP:$ip" . "rn时间 :$time" . "rnrn";
$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 $filename 写入成功";
echo "——错误记录被保存!";
fclose($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($file_path,$error_content)) {
echo "不能写入到文件 $filename";
exit;
}
//echo "文件 $filename 写入成功";
echo "——错误记录被保存!";
fclose($handle);
} else {
echo "文件 $filename 不可写";
}
}
}
echo "<br />";
if ($this->is_error) {
exit;
}
}
echo "</div>";
echo "</fieldset>";
echo "<br />";
}
//释放结果集
public function free() {
@ MysqL_free_result($this->result);
}
//数据库选择
public function select_db($db_database) {
return MysqL_select_db($db_database);
}
public function num_fields($table_name) {
//return MysqL_num_fields($this->result);
$this->query("select * from $table_name");
echo "<br />";
echo "字段数：" . $total = MysqL_num_fields($this->result);
echo "<pre>";
for ($i = 0; $i < $total; $i++) {
print_r(MysqL_fetch_field($this->result,$i));
}
echo "</pre>";
echo "<br />";
}
//取得 MysqL 服务器信息
public function MysqL_server($num = '') {
switch ($num) {
case 1 :
return MysqL_get_server_info(); //MysqL 服务器信息
break;
case 2 :
return MysqL_get_host_info(); //取得 MysqL 主机信息
break;
case 3 :
return MysqL_get_client_info(); //取得 MysqL 客户端信息
break;
case 4 :
return MysqL_get_proto_info(); //取得 MysqL 协议信息
break;
default :
return MysqL_get_client_info(); //默认取得MysqL版本信息
}
}
public function __destruct() {
if (!empty ($this->result)) {
$this->free();
}
MysqL_close($this->conn);
} //function __destruct();
/*获得客户端真实的IP地址*/
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"),"unkNown")) {
$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'],"unkNown")) {
$ip = $_SERVER['REMOTE_ADDR'];
} else {
$ip = "unkNown";
}
return ($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 "输入非法注入内容！";
exit ();
} else {
return $sql_str;
}
}
function checkurl() { //检查来路
if (preg_replace("/https?://([^:/]+).*/i","1",$_SERVER['HTTP_REFERER']) !== preg_replace("/([^:]+).*/",$_SERVER['HTTP_HOST'])) {
header("Location: http://www.xxxxx.com");
exit();
}
}
}
?>
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 [email protected] 举报，一经查实，本站将立刻删除。
