class.mysql.php

贝叶斯算法

<?php
# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
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#
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# for the specific language governing rights and limitations under the
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#
# The Original Code is DotClear Weblog.
#
# The Initial Developer of the Original Code is
# Olivier Meunier.
# Portions created by the Initial Developer are Copyright (C) 2003
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# ***** END LICENSE BLOCK *****

# Classe de connexion MySQL

require_once dirname(__FILE__).'/class.recordset.php';

class Connection
{
	var $con_id;
	var $error;
	var $errno;
	
	function Connection($user, $pwd , $alias='', $dbname)
	{
		$this->error = '';
		
		$this->con_id = @mysql_connect($alias, $user, $pwd);
		
		if (!$this->con_id) {
			$this->setError();
		} else {
			$this->database($dbname);
		}
	}
	
	function database($dbname)
	{
		$db = @mysql_select_db($dbname);
		if(!$db) {
			$this->setError();
		return false;
		} else {
			return true;
		}
	}
	
	function close()
	{
		if ($this->con_id) {
			mysql_close($this->con_id);
			return true;
		} else {
			return false;
		}
	}
	
	function select($query,$class='recordset')
	{
		if (!$this->con_id) {
			return false;
		}
		
		if ($class == '' || !class_exists($class)) {
			$class = 'recordset';
		}
		
		$cur = mysql_unbuffered_query($query, $this->con_id);
		
		if ($cur)
		{
			# Insertion dans le reccordset
			$i = 0;
			$arryRes = array();
			while($res = mysql_fetch_row($cur))
			{
				for($j=0; $j<count($res); $j++)
				{
					$arryRes[$i][strtolower(mysql_field_name($cur, $j))] = $res[$j];		
				}
				$i++;
			}
			return new $class($arryRes);
		}
		else
		{
			$this->setError();
			return false;
		}
	}
	
	function execute($query)
	{
		if (!$this->con_id) {
			return false;
		}
		
		$cur = mysql_query($query, $this->con_id);
		
		if (!$cur) {
			$this->setError();
			return false;
		} else {
			return true;
		}
		
	}
	
	function getLastID()
	{
		if ($this->con_id) {
			return mysql_insert_id($this->con_id);
		} else {
			return false;
		}
	}
	
	function setError()
	{
		if ($this->con_id) {
			$this->error = mysql_error($this->con_id);
			$this->errno = mysql_errno($this->con_id);
		} else {
			$this->error = mysql_error();
			$this->errno = mysql_errno();
		}
	}
	
	function error()
	{
		if ($this->error != '') {
			return $this->errno.' - '.$this->error;
		} else {
			return false;
		}
	}
	
	function escapeStr($str)
	{
		return mysql_escape_string($str);
	}
}

?>