php MYSQL data operation class_PHP tutorial

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Release: 2016-07-14 10:10:19
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mysql database operation class, share with everyone


[php]

/**
 *db.class.php create databse object
 *
 *@author Dick 417@668x.net
 *@copyright http://blog.csdn.net/haibrother
 *
 **/

class Dick_Db{
Public $db_host = ''; //Host address
Public $db_username = ''; //Database account
Public $db_password = ''; //Database password
Public $db_name = ''; //Database name
Public $link = ''; //Database connection object
Public $debug = 1; //Whether to enable debugging, the default is enabled
Public $pconnect = 0; //Whether to enable long connections, the default is closed
Public $log_file = 'log/';//Log file directory

/**
*Initialization information
*@param object
**/
Public function __construct($config=''){
If(!is_object($config)){
                 $this->halt('database config is not wrong,please check it!');
         } 
If(!empty($config)){
$this->db_host = $config->host;
$this->db_username = $config->username;
$this->db_password = $config->password;
                                                                                                           $this->db_name                                                                                    } 
$this->connect();
}  
       
/**
* Get link
**/
Public function connect(){
            $connect = $this->pconnect === 1?'mysql_pconnect':'mysql_connect';
If(!$this->link = @$connect($this->db_host,$this->db_username,$this->db_password)){
               $this->halt('Database cant not connect!');
                                                                                              Mysql_set_charset('utf8',$this->link);
mysql_select_db($this->db_name,$this->link);
}  


/**
      *query
      *@param string $sql
      *return boolean 
      **/
Public function query($sql){
If(!$query = mysql_query($sql,$this->link)){
                 $message = date('Y-m-d H:i:s').' '.$sql;
$this-> write_log($message);
                   $this->halt('SQL error,please check it!',$sql);
         } 
         return $query;
}  

/**
*
*@param string $sql
      *@param string $type
      * mysql_fetch_assoc  mysql_fetch_array  mysql_fetch_row  mysql_affected_rows
      *@return array
      */ 
     public function fetch($sql,$type='assoc'){ 
        $fetch_type = 'mysql_fetch_'.$type; 
        $query = $this->query($sql); 
        $result = $fetch_type($query); 
        $this->free_result($query); 
        $this->close(); 
        return $result; 
     } 
 
     /**
      *@param string $sql
      *@return array
      **/ 
     public function dickFetch($sql,$type='assoc'){ 
        $fetch_type = 'mysql_fetch_'.$type; 
        $query = $this->query($sql); 
        $rows=array(); 
        while ($row=$fetch_type($query)) { 
            $rows[]=$row; 
        } 
        $this->free_result($query); 
        $this->close(); 
        return $rows; 
     } 
 
     /**
*Get the last ID of insert
*@param string $sql
**/ 
     public function insert_id(){ 
        return mysql_insert_id($this->link); 
     } 
 
     /**
*Release database object resources
**/ 
     public function free_result($query){ 
        return mysql_free_result($query); 
     } 
 
 
     /**
*Close database connection
**/ 
     public function close(){ 
        if($this->pconnect === 0) return mysql_close($this->link); 
     } 
      
 
 
    /**
* * Integers are processed safely, only integers greater than or equal to 0 are returned
*@param int
*@return int
**/ 
    public function numeric(& $variint){ 
        if (!isset ($variint)) 
            return 0; 
        if (!is_numeric($variint)) 
            return 0; 
 
        //首字符0处理  
        $str_len = strlen($variint); 
        for ($i = 0; $i < $str_len; $i++) { 
            if ($variint[$i] != '0') 
                break; 
        } 
        if ($i > 0 && $variint > 0) { 
            $variint = substr($variint, $i, $str_len); 
            $str_len = strlen($variint); 
        } 
 
        //数字安全处理  
        if ($str_len > 0) { 
            if (!preg_match("/^[0-9]+$/", $variint)) { 
                return 0; 
            } else { 
                $variint = substr($variint, 0, 10); 
                //兼容MYSQL中INT无符号最大值4294967295  
                $variint = ($variint > 4294967295) ? 4294967295 : $variint; 
                return $variint; 
            } 
        } else { 
            return 0; 
        } 
    } 
 
    /**
*Return mysql error
**/ 
    public function error() { 
        return (($this->link) ? mysql_error($this->link) : mysql_error()); 
    } 
 
 
    /**
*Return mysql errno
**/ 
    public function errno() { 
        return intval(($this->link) ? mysql_errno($this->link) : mysql_errno()); 
    } 
 
    /**
*Write to SQL error log
*@param string
*@param string type
**/ 
    public function write_log($message='',$type='date'){ 
        if(empty($message))return false; 
        if(!in_array($type, array('date','month')))return false; 
        if(!is_dir($this->log_file)){ 
            mkdir($this->log_file); 
        } 
        switch ($type) { 
            case 'month': 
                $file = $this->log_file.date('Y-m').'.log'; 
                break; 
             
            default: 
                $file = $this->log_file.date('Y-m-d').'.log'; 
                break; 
        } 
        if(!file_exists($file)){ 
            file_put_contents($file,''); 
        } 
        if(!is_readable($file)){ 
            $this->halt($file.'- 系统无权限读操作!');    
        } 
        if(!is_writable($file)){ 
            $this->halt($file.'- 系统无权限写操作!'); 
        } 
        $contents = file_get_contents($file); 
        $add_message = '  -Error:'.$this->error().'   -Errno:'.$this->errno(); 
        file_put_contents($file, $contents.$message.$add_message."n"); 
         
    } 
 
 
    /**
* Terminate program
*@param str $message
*@return print
**/ 
     public function halt($message='',$sql=''){ 
        if($this->debug===1){ 
            $error_get_last = error_get_last(); 
            if($message) { 
                $errmsg = "System info: $messagenn"; 
            } 
            $errmsg .= "Time: ".date('Y-m-d H:i:s')."n"; 
            $errmsg .= "Script: ".$error_get_last['file']."nn"; 
            if($sql) { 
                $errmsg .= "SQL: ".htmlspecialchars($sql)."n"; 
            } 
            $errmsg .= "Error:  ".$this->error()."n"; 
            $errmsg .= "Errno.:  ".$this->errno(); 
 
            echo "n"; 
            echo "

"; 
            echo nl2br($errmsg); 
            exit(); 
        } 
         
     } 
 
     /**
*Program test printing
*@param string
*@return print
**/ 
     public function prf($param){ 
        echo '

'; <br>
        print_r($param); <br>
        echo '
'; 
        exit; 
     } 
 
 

################################################# 
####测试程序 
#### 
################################################## 
error_reporting(E_ALL); 
header('Content-type:text/html;charset=utf-8'); 
date_default_timezone_set('Asia/Shanghai'); 
$config = array( 
    'host'     => '192.168.2.1', 
    'username' => 'root', 
    'password' => '', 
    'dbname'   => 'test', 
    ); 
$db = new Dick_Db((object)$config); 
$db     ->pconnect = 1; 
$sql = 'SELECT * FROM t1'; 
$db->prf($db->dickFetch($sql)); 
 
?> 

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/477537.htmlTechArticlemysql database operation class, share with everyone [php] ?php /***db.class.php create databse object * *@author Dick 417@668x.net *@copyright http://blog.csdn.net/haibrother * **/ class D. ..
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