122 lines
2.6 KiB
PHP
122 lines
2.6 KiB
PHP
<?php
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/**
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* Query
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*
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* Free Query Builder / Database Abstraction Layer
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*
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* @package Query
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* @author Timothy J. Warren
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* @copyright Copyright (c) 2012 - 2014
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* @link https://github.com/aviat4ion/Query
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* @license http://philsturgeon.co.uk/code/dbad-license
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*/
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// --------------------------------------------------------------------------
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namespace Query\Driver;
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/**
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* SQLite-specific backup, import and creation methods
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*
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* @package Query
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* @subpackage Drivers
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* @method mixed query(string $sql)
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* @method string quote(string $str)
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*/
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class SQLite_Util extends Abstract_Util {
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/**
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* Create an SQL backup file for the current database's data
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*
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* @param array $excluded
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* @return string
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*/
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public function backup_data($excluded=array())
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{
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// Get a list of all the objects
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$sql = 'SELECT DISTINCT "name"
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FROM "sqlite_master"
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WHERE "type"=\'table\'';
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if( ! empty($excluded))
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{
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$sql .= " AND \"name\" NOT IN('".implode("','", $excluded)."')";
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}
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$res = $this->query($sql);
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$result = $res->fetchAll(\PDO::FETCH_ASSOC);
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unset($res);
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$output_sql = '';
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// Get the data for each object
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foreach($result as $r)
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{
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$sql = 'SELECT * FROM "'.$r['name'].'"';
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$res = $this->query($sql);
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$obj_res = $res->fetchAll(\PDO::FETCH_ASSOC);
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unset($res);
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// If the row is empty, continue;
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if (empty($obj_res)) continue;
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// Nab the column names by getting the keys of the first row
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$columns = array_keys(current($obj_res));
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$insert_rows = array();
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// Create the insert statements
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foreach($obj_res as $row)
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{
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$row = array_values($row);
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// Quote values as needed by type
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for($i=0, $icount=count($row); $i<$icount; $i++)
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{
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$row[$i] = (is_numeric($row[$i])) ? $row[$i] : $this->quote($row[$i]);
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}
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$row_string = 'INSERT INTO "'.$r['name'].'" ("'.implode('","', $columns).'") VALUES ('.implode(',', $row).');';
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unset($row);
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$insert_rows[] = $row_string;
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}
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unset($obj_res);
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$output_sql .= "\n\n".implode("\n", $insert_rows);
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}
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return $output_sql;
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}
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// --------------------------------------------------------------------------
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/**
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* Create an SQL backup file for the current database's structure
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*
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* @return string
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*/
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public function backup_structure()
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{
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// Fairly easy for SQLite...just query the master table
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$sql = 'SELECT "sql" FROM "sqlite_master"';
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$res = $this->query($sql);
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$result = $res->fetchAll(\PDO::FETCH_ASSOC);
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$sql_array = array();
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foreach($result as $r)
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{
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$sql_array[] = $r['sql'];
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}
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$sql_structure = implode(";\n", $sql_array) . ";";
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return $sql_structure;
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}
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}
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// End of sqlite_util.php
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