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<?php
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/**
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*
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* @category framework
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* @package database
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* @author WebsiteBaker Project
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* @copyright 2004-2009, Ryan Djurovich
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* @copyright 2009-2011, Website Baker Org. e.V.
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* @link http://www.websitebaker2.org/
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* @license http://www.gnu.org/licenses/gpl.html
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* @platform WebsiteBaker 2.8.x
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* @requirements PHP 5.2.2 and higher
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* @version $Id$
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* @filesource $HeadURL: $
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* @lastmodified $Date: $
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*
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*/
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// $Id$
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/*
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Website Baker Project <http://www.websitebaker.org/>
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Copyright (C) 2004-2009, Ryan Djurovich
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Website Baker is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Website Baker is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Website Baker; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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Database class
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This class will be used to interface between the database
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define('DATABASE_CLASS_LOADED', true);
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class database {
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private $db_handle = null; // readonly from outside
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private $connected = false;
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private $error = '';
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private $error_type = '';
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private $message = array();
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// Set DB_URL
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function database($url = '') {
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// Connect to database
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return $mysql;
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}
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}
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// Gets the first column of the first row
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function get_one($statement) {
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$fetch_row = mysql_fetch_row(mysql_query($statement));
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function get_one( $statement )
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{
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$fetch_row = mysql_fetch_array(mysql_query($statement) );
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$result = $fetch_row[0];
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$this->set_error(mysql_error());
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if(mysql_error()) {
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function get_error() {
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return $this->error;
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}
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}
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/*
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* default Getter
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*/
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public function __get($var_name)
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{
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if($var_name == 'db_handle')
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{
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return $this->db_handle;
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}
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return null;
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}
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/*
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* @param string $table_name: full name of the table (incl. TABLE_PREFIX)
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* @param string $field_name: name of the field to seek for
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* @return bool: true if field exists
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*/
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public function field_exists($table_name, $field_name)
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{
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$sql = 'DESCRIBE `'.$table_name.'` `'.$field_name.'` ';
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$query = $this->query($sql);
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return ($query->numRows() != 0);
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}
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/*
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* @param string $table_name: full name of the table (incl. TABLE_PREFIX)
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* @param string $index_name: name of the index to seek for
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* @return bool: true if field exists
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*/
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public function index_exists($table_name, $index_name, $number_fields = 0)
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{
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$number_fields = intval($number_fields);
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$keys = 0;
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$sql = 'SHOW INDEX FROM `'.$table_name.'`';
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if( ($res_keys = $this->query($sql)) )
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{
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while(($rec_key = $res_keys->fetchRow()))
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{
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if( $rec_key['Key_name'] == $index_name )
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{
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$keys++;
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}
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}
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}
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if( $number_fields == 0 )
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{
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return ($keys != $number_fields);
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}else
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{
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return ($keys == $number_fields);
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}
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}
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/*
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* @param string $table_name: full name of the table (incl. TABLE_PREFIX)
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* @param string $field_name: name of the field to add
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* @param string $description: describes the new field like ( INT NOT NULL DEFAULT '0')
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* @return bool: true if successful, otherwise false and error will be set
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*/
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public function field_add($table_name, $field_name, $description)
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{
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if( !$this->field_exists($field_name, $table_name) )
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{ // add new field into a table
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$sql = 'ALTER TABLE `'.$table_name.'` ADD '.$field_name.' '.$description.' ';
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$query = $this->query($sql);
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$this->set_error(mysql_error());
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if( !$this->is_error() )
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{
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return ( $this->field_exists($field_name, $table_name) ) ? true : false;
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}
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}else
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{
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$this->set_error('field \''.$field_name.'\' already exists');
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}
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return false;
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}
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/*
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* @param string $table_name: full name of the table (incl. TABLE_PREFIX)
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* @param string $field_name: name of the field to add
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* @param string $description: describes the new field like ( INT NOT NULL DEFAULT '0')
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* @return bool: true if successful, otherwise false and error will be set
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*/
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public function field_modify($table_name, $field_name, $description)
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{
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$retval = false;
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if( $this->field_exists($field_name, $table_name) )
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{ // modify a existing field in a table
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$sql = 'ALTER TABLE `'.$table_name.'` DROP `'.$field_name.'`';
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}
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}
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/*
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* @param string $table_name: full name of the table (incl. TABLE_PREFIX)
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* @param string $field_name: name of the field to remove
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* @return bool: true if successful, otherwise false and error will be set
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*/
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public function field_remove($table_name, $field_name)
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{
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$retval = false;
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if( $this->field_exists($field_name, $table_name) )
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{ // modify a existing field in a table
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$sql = 'ALTER TABLE `'.$table_name.'` DROP `'.$field_name.'`';
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$retval = ( $this->query($sql) ? true : false );
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}
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return $retval;
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}
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/*
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* @param string $table_name: full name of the table (incl. TABLE_PREFIX)
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* @param string $index_name: name of the new index
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* @param string $field_list: comma seperated list of fields for this index
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* @param string $index_type: kind of index (UNIQUE, PRIMARY, '')
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* @return bool: true if successful, otherwise false and error will be set
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*/
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public function index_add($table_name, $index_name, $field_list, $index_type = '')
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{
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$retval = false;
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$field_list = str_replace(' ', '', $field_list);
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$field_list = explode(',', $field_list);
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$number_fields = sizeof($field_list);
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$field_list = '`'.implode('`,`', $field_list).'`';
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if( $this->index_exists($table_name, $index_name, $number_fields) ||
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$this->index_exists($table_name, $index_name))
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{
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$sql = 'ALTER TABLE `'.$table_name.'` ';
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$sql .= 'DROP INDEX `'.$index_name.'`';
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if( $this->query($sql))
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{
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$sql = 'ALTER TABLE `'.$table_name.'` ';
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$sql .= 'ADD '.$index_type.' `'.$index_name.'` ( '.$field_list.' ); ';
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if( $this->query($sql)) { $retval = true; }
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}
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}
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return $retval;
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}
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/*
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* @param string $table_name: full name of the table (incl. TABLE_PREFIX)
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* @param string $field_name: name of the field to remove
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* @return bool: true if successful, otherwise false and error will be set
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*/
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public function index_remove($table_name, $index_name)
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{
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$retval = false;
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if( $this->index_exists($table_name, $index_name) )
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{ // modify a existing field in a table
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$sql = 'ALTER TABLE `'.$table_name.'` DROP INDEX `'.$index_name.'`';
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$retval = ( $this->query($sql) ? true : false );
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}
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return $retval;
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}
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} /// end of class database
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class mysql {
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// Run a query
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additional functions added in class.database