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99 lines
2.9 KiB
PHP
99 lines
2.9 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace Think\Db\Driver;
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use Think\Db\Driver;
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/**
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* Sqlite数据库驱动
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*/
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class Sqlite extends Driver {
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/**
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* 解析pdo连接的dsn信息
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* @access public
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* @param array $config 连接信息
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* @return string
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*/
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protected function parseDsn($config){
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$dsn = 'sqlite:'.$config['database'];
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return $dsn;
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}
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/**
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* 取得数据表的字段信息
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* @access public
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* @return array
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*/
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public function getFields($tableName) {
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list($tableName) = explode(' ', $tableName);
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$result = $this->query('PRAGMA table_info( '.$tableName.' )');
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$info = array();
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if($result){
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foreach ($result as $key => $val) {
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$info[$val['field']] = array(
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'name' => $val['field'],
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'type' => $val['type'],
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'notnull' => (bool) ($val['null'] === ''), // not null is empty, null is yes
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'default' => $val['default'],
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'primary' => (strtolower($val['dey']) == 'pri'),
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'autoinc' => (strtolower($val['extra']) == 'auto_increment'),
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);
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}
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}
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return $info;
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}
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/**
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* 取得数据库的表信息
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* @access public
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* @return array
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*/
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public function getTables($dbName='') {
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$result = $this->query("SELECT name FROM sqlite_master WHERE type='table' "
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. "UNION ALL SELECT name FROM sqlite_temp_master "
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. "WHERE type='table' ORDER BY name");
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$info = array();
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foreach ($result as $key => $val) {
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$info[$key] = current($val);
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}
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return $info;
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}
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/**
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* SQL指令安全过滤
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* @access public
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* @param string $str SQL指令
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* @return string
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*/
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public function escapeString($str) {
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return str_ireplace("'", "''", $str);
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}
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/**
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* limit
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* @access public
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* @return string
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*/
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public function parseLimit($limit) {
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$limitStr = '';
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if(!empty($limit)) {
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$limit = explode(',',$limit);
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if(count($limit)>1) {
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$limitStr .= ' LIMIT '.$limit[1].' OFFSET '.$limit[0].' ';
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}else{
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$limitStr .= ' LIMIT '.$limit[0].' ';
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}
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}
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return $limitStr;
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}
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}
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