<?php
/**
* PHP versions 4 and 5
*
* Database Class
*
* Copyright (C) 2006 Onur Yerlikaya
* LICENCE : This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* @category Core
* @package Database
* @author Onur Yerlikaya <onur.yerlikaya@linux.org.tr>
* @version 0.0.1
* @link http://www.onuryerlikaya.com
* @licence GNU General Public Licence - Version 2
* @copyright Onur Yerlikaya
*/
class Database
{
/**
* Connection Link
*
* @var mixed
*/
var $link = null;
/**
* Error Report Variables
*
* @var string $error Error Text
* @var integer $errno Error Number
*/
var $error = null;
var $errno = 0;
/**
* Temporary Variable
*
* @var string
*/
var $tmp = null;
/**
* Holds Sql Results
*
* @var string
*/
var $result = null;
/**
* Debug Tpl File
*
* @var string
*/
var $debug_tpl = 'db_debug.tpl';
/**
* Database Class Version
*
* @var string
*/
var $version= '0.0.1';
/**
* Construct can set sql informations
*
* @static
*/
function Database() { }
/**
* Connects Sql Database
*
* @return boolean
*/
function connect($dsn)
{
// Sql Connection with Default mysql drivers
@$this->link = mysql_connect($dsn['hostname'],$dsn['username'],$dsn['password']);
// Debugging ..
if(!$this->link)
{
// Calls Error Handling function
$this->_error();
} else {
// Calling selectDatabase function in sql class
$this->_selectDatabase($dsn['database']);
return true;
}
}
/**
* Database Class select Database
*
* @param string Database Name
* @return boolean
*/
function _selectDatabase($Database)
{
// Sql Select Database with mysql drivers
@$sqlSelectDatabase = mysql_select_db($Database);
// Debugging ..
if(!$sqlSelectDatabase)
{
// Calls Error Handling function
$this->_error();
} else {
return true;
}
}
/**
* Checks Sql Errors
*
* @param string $process Holds process variable
* @return Error|false Sql Errors
*/
function checkError($process)
{
// Debugging ..
if(!$process && $this->error != null && $this->errno != 0)
{
// Get Debug Template Content
$debug = file_get_contents(dirname(__FILE__).'/'.$this->debug_tpl);
// Replaces {-error-}
$debug = str_replace('{-error-}',$this->error,$debug);
// Replaces {-errno-}
$debug = str_replace('{-errno-}',$this->errno,$debug);
die($debug);
} else {
return true;
}
}
/**
* Prepares Sql Query
*
* @param string $sql Sql Code
* @param string $name Prepared Sql Memory
*/
function prepare($sql,$name='default')
{
// It sets Sql code in memory
$this->tmp[$name] = $sql;
}
/**
* Execute Sql Query Which prepered before
*
* @param string $name Prepared Sql Memory
* @param string $array_data Array Data for values..
* @static
*/
function execute($name='default',$array=null)
{
// Send Query with prepared Sql Code
$this->query($this->tmp[$name],$array);
}
/**
* Freeing Result set
*
* @param integer if is zero Database class frees all memory
* @static
* @return boolean
*/
function free($type=1)
{
/**
* If type variable sets zero unset Database class
* temporary variables from memory
*/
if($type == 0 ) {
unset($this->tmp);
}
// Sql Free Results with mysql drivers
@$sqlFreeResult = mysql_free_result($this->result);
// Debugging ..
if(!$sqlFreeResult)
{
// Calls Error Handling function
$this->_error();
} else {
return true;
}
}
/**
* Prepares sql queries based on you supply
*
* <code>
* ..
* $table_name = 'users';
* $table_fields = array('id','name','surname');
*
* /**
* * This is AutoPrepare a new SQL code
* *
* * Select (id,name,surname) From users where id=1
* * /
* $Database->autoPrepare($table_name,$table_fields,'select','where id=1');
* // $Database->autoPrepare($table_name,$table_fields,'update','where id=2');
*
* </code>
* @param string $tableName Table Name
* @param string $tableFields Table Fields in array
* @param string $type Sql query types ( select,insert,update,delete )
* @param string $statements Sql Statements
* @param string $name Prepared Sql Memory
* @return boolean
*/
function autoPrepare($tableName,$tableFields='*',$type,$statements=null,$name='default')
{
// Setting fields for select and insert queries
if(is_array($tableFields)) {
$table_fields = "(".join(',',$tableFields).")";
}
switch($type)
{
case 'select':
// Creating Sql Code for Select Query
$this->tmp[$name] = "Select ".$table_fields." From ".$tableName." ".$statements;
break;
case 'insert':
// Creating Sql Code for Insert Query
$insert = "(".join(',',array_fill(1,count($tableFields),'?')).")";
$this->tmp[$name] = "insert into ".$tableName." ".$table_fields. " VALUES ".$insert." ".$statements;
break;
case 'update':
// Creating Sql Code for Update Query
for($i=0;$i<count($tableFields);$i++)
{
$update .= $tableFields[$i]."=?, ";
}
$this->tmp[$name] = "Update ".$tableName." SET ".$update." ".$statements;
break;
case 'delete':
// Creating Sql Code for Delete Query
$this->tmp[$name] = "Delete From ".$tableName." ".$statements;
break;
}
}
/**
* Get number of fields in result
*
* @return false|$sqlNumCols count fields in results.
*/
function numCols()
{
// Getting num fields with mysql drivers
@$sqlNumCols = mysql_num_fields($this->result);
// Debugging..
if(!$sqlNumCols)
{
// Calls Error Handling function
$this->_error();
} else {
return $sqlNumCols;
}
}
/**
* Get number of rows in result
*
* @return false|$sqlNumRows count rows in result
*/
function numRows()
{
// Getting num rows with mysql drivers
@$sqlNumRows = mysql_num_rows($this->result);
// Debugging..
if(!$sqlNumRows)
{
// Calls Error Handling function
$this->_error();
} else {
return $sqlNumRows;
}
}
/**
* Fetching Result
*
* @return false|$sqlFetch Fetched Result
*/
function fetch()
{
// Fetching result with mysql drivers
@$sqlFetch = mysql_fetch_array($this->result,MYSQL_BOTH);
// Debugging..
if(!$sqlFetch)
{
// Calls Error Handling function
$this->_error();
} else {
return $sqlFetch;
}
}
/**
* Escapes Sql bad characters
*
* @return mixed
*/
function escape($data)
{
// Escapes special characters
return addslashes($data);
}
/**
* Get a data from Sql Query
*
* @param string $sql Sql Code
* @param boolean $pre Prepared Sql
* @return string One Result
*/
function getOne($sql,$pre=false)
{
// Check for prepared before
if($pre) {
$sql = $this->tmp[$sql];
}
$this->query($sql);
$fetched = $this->fetch();
return $fetched[0];
}
/**
* Get a row from Sql Query
*
* @param string $sql Sql Code
* @param boolean $pre Prepared Sql
* @return string One Row Result
*/
function getRow($sql,$pre=false)
{
// Check for prepared before
if($pre) {
$sql = $this->tmp[$sql];
}
$this->query($sql);
return $this->fetch();
}
/**
* Database Class Sql Query
*
* @param string $sql Sql Code
* @param array $array Sql Data
* @return false|$sqlQuery Sql Query
*/
function query($sql,$array=null)
{
// Replaced ? characters to string ( %s )
@$editSqlCode = str_replace('?',"'%s'",$sql);
// Formatted Sql code
@$sql = vsprintf($editSqlCode,$array);
// Query with mysql drivers
@$this->result = mysql_query($sql);
//Debugging
if(!$this->result)
{
// Calls Error Handling function
$this->_error();
} else {
return $this->result;
}
}
/**
* Disconnect from sql
*
* @return boolean
*/
function disconnect()
{
// Close with mysql drivers
@$sqlClose = mysql_close($this->link);
// Debugging..
if(!$sqlClose)
{
// Calls Error Handling function
$this->_error();
} else {
return true;
}
}
/**
* Error Handling
*
* @return boolean
*/
function _error()
{
// Assign error with mysql driver
$this->error = mysql_error();
// Assign error number with mysql driver
$this->errno = mysql_errno();
return false;
}
}
?>
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