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93 lines
2.9 KiB
PHP
93 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) 2006-2012 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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* mysql数据库驱动
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*/
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class Mysql 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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$dsn = 'mysql:dbname='.$config['database'].';host='.$config['hostname'];
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if(!empty($config['hostport'])) {
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$dsn .= ';port='.$config['hostport'];
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}elseif(!empty($config['socket'])){
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$dsn .= ';unix_socket='.$config['socket'];
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}
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if(!empty($config['charset'])){
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$dsn .= ';charset='.$config['charset'];
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}
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return $dsn;
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}
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/**
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* 取得数据表的字段信息
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* @access public
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*/
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public function getFields($tableName) {
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$this->initConnect(true);
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list($tableName) = explode(' ', $tableName);
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$sql = 'SHOW COLUMNS FROM `'.$tableName.'`';
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$result = $this->query($sql);
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$info = [];
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if($result) {
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foreach ($result as $key => $val) {
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$info[$val['field']] = [
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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['key']) == '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 $info;
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}
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/**
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* 取得数据库的表信息
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* @access public
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*/
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public function getTables($dbName='') {
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$sql = !empty($dbName)?'SHOW TABLES FROM '.$dbName:'SHOW TABLES ';
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$result = $this->query($sql);
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$info = [];
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foreach ($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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* 字段和表名处理
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* @access protected
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* @param string $key
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* @return string
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*/
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protected function parseKey(&$key) {
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$key = trim($key);
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if(!preg_match('/[,\'\"\*\(\)`.\s]/',$key)) {
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$key = '`'.$key.'`';
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}
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return $key;
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}
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}
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