Revision 1362
Added by Dietmar almost 14 years ago
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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 |
Also available in: Unified diff
additional functions added in class.database