php mysql完整数据库连接类

php教程 mysql教程完整数据库教程连接类
 */
class mysql {
 private $db_host; //数据库主机
 private $db_user; //数据库用户名
 private $db_pwd; //数据库用户名密码
 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 $sql; //sql执行语句
 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_user, $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");
  }
  $this->sql = $sql;

  $result = mysql_query($this->sql, $this->conn);

  if (!$result) {
   //调试中使用，sql语句出错时会自动打印出来
   if ($this->show_error) {
    $this->show_error("错误sql语句：", $this->sql);
   }
  } else {
   $this->result = $result;
  }
  return $this->result;
 }

 /*创建添加新的数据库*/
 public function create_database($database_name) {
  $database = $database_name;
  $sqldatabase = 'create database ' . $database;
  $this->query($sqldatabase);
 }

 /*查询服务器所有数据库*/
 //将系统数据库与用户数据库分开，更直观的显示？
 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;
 }

 /*查询数据库下所有的表*/
 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[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 = '', $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, $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 "<font color='red'>" . $message . "</font>";
   echo "<br />";
  } else {
   echo "<fieldset>";
   echo "<legend>错误信息提示:</legend><br />";
   echo "<div style='font-size:14px; clear:both; font-family:verdana, arial, helvetica, sans-serif;'>";
   echo "<div style='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 style='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!";

      //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 "<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);
 }

 //查询字段数量
 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
  }
 }

 //析构函数，自动关闭数据库,垃圾回收机制
 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教程?://([^:/]+).*/i", "1", $_server['http_referer']) !== preg_replace("/([^:]+).*/", "1", $_server['http_host'])) {
   header("location: http://www.111cn.net");
   exit();
  }
 }

}

我们一般是获取表单提交的数据，如果下面我们利用checkbox[]来操作，下面看实例。
-->

<form id="form1" name="form1" method="post" action="">
  1
  <input type="checkbox" name="checkbox[]" id="checkbox" value="1" />
  2
  <input type="checkbox" name="checkbox[]" id="checkbox2" value="2"  />
  3
  <input type="checkbox" name="checkbox[]" id="checkbox3" value="3" />
 
  <input type="submit" name="button" id="button" value="提交" />
</form>

<?
if( $_post )
{
 print_r( $_post );
 //输也是以数据形式保存的，
 /*
 array
 (
  [checkbox] => array
   (
    [0] => 1
    [1] => 2
    [2] => 3
   )
 
  [button] => 提交
 )
 
 这样就好操作了，我们只要如下
 */
 $array = $_post['checkbox'];
 print_r( $array );
 /*
 得到内容如下
 
 array
 (
  [0] => 1
  [1] => 2
  [2] => 3
 )

 其实1，2，3就是我们想要的内容，我们就可以利用sql的in来批量实现删除了。
*/
 $ids = implode(',',$array );
 $sql ="delete from 表名 where id in($ids ) ";
 mysql教程_query($sql);
 
 //这样就实现的数据的批量删除哦。
 //本站原创转载注明来源http://www.111cn.net 否则必究！
}

测验考试libmysql教程拷入 windows/system32下和libmysql.dll拷贝到apache/bin下。
　　当然，最省事的方法是：
　　在apache中：
　　loadfile d:/php教程/php5.2.13/libmysql.dll
　　只上边这一行，mysql便可成功挪用。
　　我的服务器版本：win7
　　apache 2.2.13
　　php 5.2.13
　　mysql5.1.37
　　phpmyadmin3.3.2
　　下面是我的apache的部门配备布置。
　　phpinidir d:/php/php5.2.13 #不是必须
　　loadfile d:/php/php5.2.13/php5ts.dll
　　loadfile d:/php/php5.2.13/libmysql.dll
　　loadmodule php5_module d:/php/php5.2.13/php5apache2_2.dll
　　addtype application/x-httpd-php .php

下面总结了三种流行的数据库教程如何利用php教程 来调用它们的存储过程，我们讲有mysql教程,oracle,mssql server哦。

<?php
function check_login($user, $pass) {
         $conn = ocilogon('user', 'pass', 'database');
         $sql = 'begin :result := test.check_login(:user, :pass); end;';
         $stmt = oci_parse($conn, $sql);
        
         $result = '';
         oci_bind_by_name($stmt, ':user', $user, 32);
         oci_bind_by_name($stmt, ':pass', md5($pass), 32);
         oci_bind_by_name($stmt, ':result', $result, 10);
         oci_execute($stmt);
         ocilogoff($conn);
        
         return $result;
}
?>

调用mysql

存储过程改成：
create procedure in_out(in uid int) begin
set @msg='hello';
select *,@msg from manage_loginhistory where h_uid=uid;
end;
php调用改成：
$sql = "call in_out(39)";
$rs=mysql_query($sql);
$row=mysql_fetch_array($rs);

调用ms sql server

$user_name = '龙之泪';      //声明一个变量，用做存储过程的输入参数
   $password = '123456';       //再声明一个变量，用做存储过程的另一个输入参数
   $info = '';                            //$info，用来接受从存储过程输出的参数值
   $host="192.168.0.1";         //定义数据库服务器
   $user="sa";                        //连接用户名
   $password="123456";        //连接密码
   $db="sample";                    //数据库名称
   $dblink=mssql_connect($host,$user,$password) or die("can't connect to mssql"); //连接数据库服务器
   mssql_select_db($db,$dblink)   or die("can't select sample");//选择数据库

   $sp = mssql_init("test");  //初始化一个存储过程

   //为存储过程添加一个参数，@user_name为参数名，$user_name为参数对应的php变量，sqlvarchar表明该参数类型为sql server的varchar类型，第一个false表示该参数不是输出参数，即该参数是输入参数，第二个false表示该参数不允许为null，最后的30表示该变量的长度为30
   mssql_bind($sp,"@user_name",$user_name,sqlvarchar,false,false,30);
   mssql_bind($sp,"@password",$password,sqlvarchar,false,false,30);
   mssql_bind($sp,"@info",$info,sqlvarchar,true,false,30); //为存储过程添加一个输出参数
   mssql_execute($sp); //执行该存储过程

   echo $info; //打印出从存储过程中返回的输出参数值

php教程连接mssql 2005 1.下载以下两个文件,放入php ext目录及system32

php_sqlsrv_52_ts_vc6.dll   (线程安全)

php_sqlsrv_52_nts_vc6.dll (非线程安全)

vc6用于apache,vc9用于iis

2.修改php.ini

extension=php_sqlsrv_52_ts_vc6.dll

3.下载sqlncli.msi，微软官方可以下

安装的时候提示是sql server 2008的，不过2005也是可以用的。

4.测试代码

<?php

$servername = "127.0.0.1";
$connectioninfo = array("database"=>"testdb","uid"=>"test","pwd"=>"test");
$conn = sqlsrv_connect($servername, $connectioninfo);

if($conn) {
    echo "connection established.<br>";
} else {
    echo "connection could not be established.<br>";
    die(print_r(sqlsrv_errors(), true));
    exit();
}

$sql = "select * from t_employee";
$result = sqlsrv_query($conn,$sql);
$data = array();
while($row=sqlsrv_fetch_array($result)) {
    $data[] = $row;
}

foreach($data as $p) {
    echo $p['name']."<br>";
}

sqlsrv_close($conn);

echo "<br> done <br>";
echo date("y-m-d h:i:s");

?>

mysql教程连接类

class db_handle {
    var $classname = "db_handle";
    var $server;
    var $username;
    var $password;
    var $database;
    var $linkid = 0;
    var $queryresult = "";
    var $lastinsertid = "";
    /* private ignore=>ignore the error and continue, halt=>report the error and halt, report=>report the error and continue */
    var $halt_on_error = "report";
    var $error = "";
    var $errno = 0;
    /**public
     * remark: this is the db_mysql_class's structure
     * function: set the server,username,password,database variable.
     */
    function db_handle($server = "", $username = "", $password = "", $database = "") {
        $this->server = $server;
        $this->username = $username;
        $this->password = $password;
        $this->database = $database;
    }
    /**public
     * function: connect database and select database
     * success: retun 1
     * failed: return 0
     */
    function connect() {
        $this->linkid = @mssql_pconnect ( $this->server, $this->username, $this->password );
        if (! $this->linkid) {
            $this->halt ( "mssql_pconnect($this->server,$this->username,$this->password): failed" );
            return 0;
        }
        if (! @mssql_select_db ( $this->database )) {
            $this->halt ( "mssql_select_db($this->database) failed." );
            return 0;
        }
        return 1;
    }
    /**public
     * function: check the database, if exist then select
     * exist: return 1
     * not exist: return 0
     */
    function selectdatabase() {
        if (@mssql_select_db ( $this->database ))
            return 1;
        else
            return 0;
    }
    /**public
     * function: execute sql instruction
     * success: return sql result.
     * failed: return 0;
     */
    function execquery($sql = "") {
        $this->connect();
        if ($this->linkid == 0) {
            $this->halt ( "execute sql failed: have not valid database connect." );
            return 0;
        }
        ob_start ();
        $this->queryresult = mssql_query ( $sql, $this->linkid );
        $error = ob_get_contents ();
        ob_end_clean ();
        if ($error) {
            $this->halt ( "execute sql: mssql_query($sql,$this->linkid) failed." );
            return 0;
        }
        $reg = "#insert into#";
        if (preg_match ( $reg, $sql )) {
            $sql = "select @@identity as id";
            $res = mssql_query ( $sql, $this->linkid );
            $this->lastinsertid = mssql_result ( $res, 0, id );
        }
        return $this->queryresult;
    }
   
    /**public
     * function: get the query result's row number
     * success: return the row fo the result
     * failed: return 0
     */
    function gettotalrownum($result = "") {
        if ($result != "")
            $this->queryresult = $result;
        $row = @mssql_num_rows ( $this->queryresult );
        if ($row >= 0)
            return $row;
        $this->halt ( "get a row of result failed: result $result is invalid." );
        return 0;
    }
   
    /**public
     * function: get the last insert record's id
     * success: return id
     * failed: return 0
     */
    function lastinsertid() {
        return $this->lastinsertid;
    }
   
    /**public
     * function: get a field's value
     * success: return value of the field
     * failed: return 0
     */
    function getfield($result = "", $row = 0, $field = 0) {
        if ($result != "")
            $this->queryresult = $result;
        $fieldvalue = @mssql_result ( $this->queryresult, $row, $field );
        if ($fieldvalue != "")
            return $fieldvalue;
        $this->halt ( "get field: mssql_result($this->queryresult,$row,$field) failed." );
        return 0;
       
    //here should have error handle
    }
   
    /**public
     * function: get next record
     * success: return a array of the record's value
     * failed: return 0
     */
    function nextrecord($result = "") {
        if ($result != "")
            $this->queryresult = $result;
        $record = @mssql_fetch_array ( $this->queryresult );
        if (is_array ( $record ))
            return $record;
            //$this->halt("get the next record failed: the result $result is invalid.");
        return 0;
    }
   
    /**public
     * function: free the query result
     * success return 1
     * failed: return 0
     */
    function freeresult($result = "") {
        if ($result != "")
            $this->queryresult = $result;
        return @mssql_free_result ( $this->queryresult );
    }
   
    /**public
     * function: set the halt_on_error's state
     * success: return 1
     * failed: return 0
     */
    function sethaltonerror($state = "ignore") {
        if (! ($state == "ignore" || $state == "report" || $state == "halt")) {
            $this->halt ( "set the halt_on_error fail: there is no state value $state" );
            return 0;
        }
        $this->halt_on_error = $state;
        return 1;
    }
   
    /**public
     * function: get the halt_on_error's state
     */
    function gethaltonerror() {
        return $this->halt_on_error;
    }
   
    /**public
     * function: get the class's name
     */
    function tostring() {
        return $this->classname;
    }
   
    /**private
     * function: error handle
     */
    function halt($msg) {
        $this->error = @mysql_error ( $this->linkid );
        $this->errno = @mysql_errno ( $this->linkid );
        if ($this->halt_on_error == "ignore")
            return;
        $this->makemsg ( $msg );
        if ($this->halt_on_error == "halt")
            die ( "session halted" );
    }
   
    /**private
     * function: make error information and print
     */
    function makemsg($msg) {
        printf ( "database error: %sn", $msg );
        printf ( "mysql error: %s (%s)n", $this->errno, $this->error );
    }
}