OpenSQLManager/src/databases/sqlite_manip.php

102 lines
2.2 KiB
PHP

<?php
/**
* OpenSQLManager
*
* Free Database manager for Open Source Databases
*
* @author Timothy J. Warren
* @copyright Copyright (c) 2012
* @link https://github.com/aviat4ion/OpenSQLManager
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
/**
* SQLite Database manipulation class
*/
class SQLite_manip extends db_manip {
/**
* Convenience function to create a new table
*
* @param string $name //Name of the table
* @param array $columns //columns as straight array and/or column => type pairs
* @param array $constraints // column => constraint pairs
* @param array $indexes // column => index pairs
* @return string
*/
function create_table($name, $columns, $constraints=array(), $indexes=array())
{
$column_array = array();
// Reorganize into an array indexed with column information
// Eg $column_array[$colname] = array(
// 'type' => ...,
// 'constraint' => ...,
// 'index' => ...,
// )
foreach($columns as $colname => $type)
{
if(is_numeric($colname))
{
$colname = $type;
}
$column_array[$colname] = array();
$column_array[$colname]['type'] = ($type !== $colname) ? $type : '';
}
if( ! empty($constraints))
{
foreach($constraints as $col => $const)
{
$column_array[$col]['constraint'] = $const;
}
}
// Join column definitons together
$columns = array();
foreach($column_array as $n => $props)
{
$str = "{$n} ";
$str .= (isset($props['type'])) ? "{$props['type']} " : "";
$str .= (isset($props['constraint'])) ? $props['constraint'] : "";
$columns[] = $str;
}
// Generate the sql for the creation of the table
$sql = "CREATE TABLE {$name} (";
$sql .= implode(",", $columns);
$sql .= ")";
return $sql;
}
/**
* SQL to drop the specified table
*
* @param string $name
* @return string
*/
function delete_table($name)
{
return "DROP TABLE IF EXISTS \"{$name}\"";
}
/**
* Create an sqlite database file
*
* @param $path
*/
function create_db($path)
{
// Create the file if it doesn't exist
if( ! file_exists($path))
{
touch($path);
}
}
}
//End of sqlite_manip.php