Added delete_table method to database manipulation classes

src/common/db_pdo.php

@@ -160,5 +160,14 @@ abstract class db_manip {
 	 * @return string
 	 */
 	abstract function create_table($name, $columns, $constraints=array(), $indexes=array());
+
+	/**
+	 * Get database-specific sql to drop a table
+	 * 
+	 * @param string $name
+	 * 
+	 * @return string
+	 */
+	abstract function delete_table($name);
 }
 // End of db_pdo.php

src/databases/firebird_manip.php

@@ -24,5 +24,16 @@ class firebird_manip extends db_manip{
 		$sql = "CREATE TABLE {$name}";
 	}
 
+	/**
+	 * Drop the selected table
+	 * 
+	 * @param string $name
+	 * @return string
+	 */
+	function delete_table($name)
+	{
+		return "DELETE TABLE {$name}";
+	}
+	
 }
 //End of firebird_manip.php

src/databases/mysql_manip.php

@@ -17,9 +17,30 @@
   */
  class MySQL_manip extends db_manip{
 
+ 	/**
+ 	 * Convienience function for creating a new MySQL table
+ 	 * 
+ 	 * @param [type] $name [description]
+ 	 * @param [type] $columns [description]
+ 	 * @param array $constraints=array() [description]
+ 	 * @param array $indexes=array() [description]
+ 	 * 
+ 	 * @return [type]
+ 	 */
 	function create_table($name, $columns, $constraints=array(), $indexes=array())
 	{
 		//TODO: implement
 	}
+	
+	/**
+	 * Convience function for droping a MySQL table
+	 * 
+	 * @param string $name
+	 * @return  string
+	 */
+	function delete_table($name)
+	{
+		return "DROP TABLE `{$name}`";
+	}	
 }
 //End of mysql_manip.php

src/databases/odbc_manip.php

@@ -24,5 +24,10 @@ class ODBC_manip extends db_manip {
 		//ODBC can't know how to create a table
 		return FALSE;
 	}
+
+	function delete_table($name)
+	{
+		return "DROP TABLE {$name}";
+	}
 }
 // End of odbc_manip.php

src/databases/pgsql_manip.php

@@ -24,5 +24,10 @@ class pgSQL_manip extends db_manip {
 		//TODO: implement
 	}
 
+	function delete_table($name)
+	{
+		return 'DROP TABLE "'.$name.'"';
+	}
+
 }
 //End of pgsql_manip.php

src/databases/sqlite_manip.php

@@ -74,6 +74,17 @@ class SQLite_manip extends db_manip {
 		return $sql;
 	}
 
+	/**
+	 * SQL to drop the specified table
+	 * 
+	 * @param string $name
+	 * @return string
+	 */
+	function delete_table($name)
+	{
+		return "DROP TABLE IF EXISTS {$table}";
+	}
+
 	/**
 	 * Create an sqlite database file
 	 *