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<?php
/**
* Database query class for DELETE queries
*
* This file is part of Zoph.
*
* Zoph 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.
*
* Zoph 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 Zoph; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @package Zoph
* @author Jeroen Roos
*/
namespace db;
/**
* The delete object is used to create DELETE queries
*
* @package Zoph
* @author Jeroen Roos
*/
class delete extends query {
/** @var bool Set to true to allow DELETE query without WHERE
this will delete all data from the table
There currently is no way of setting this, because it
is a protection against accidently running a query like
this during development or due to a bug */
private $deleteAll=false;
/**
* Create DELETE query
* @return string SQL query
*/
public function __toString() {
$sql = "DELETE FROM " . $this->table;
if ($this->where instanceof clause) {
$sql .= " WHERE " . $this->where;
} else if (!$this->deleteAll) {
throw new exception("DELETE query without WHERE");
}
return $sql . ";";
}
}
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