You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
3.9 KiB
127 lines
3.9 KiB
10 months ago
|
<?php
|
||
|
|
// +----------------------------------------------------------------------
|
||
|
|
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
|
||
|
|
// +----------------------------------------------------------------------
|
||
|
|
// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
|
||
|
|
// +----------------------------------------------------------------------
|
||
|
|
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
|
||
|
|
// +----------------------------------------------------------------------
|
||
|
|
// | Author: liu21st <liu21st@gmail.com>
|
||
|
|
// +----------------------------------------------------------------------
|
||
|
|
|
||
|
|
namespace think\db\connector;
|
||
|
|
|
||
|
|
use PDO;
|
||
|
|
use think\db\Connection;
|
||
|
|
use think\Log;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* mysql数据库驱动
|
||
|
|
*/
|
||
|
|
class Mysql extends Connection
|
||
|
|
{
|
||
|
|
|
||
|
|
protected $builder = '\\think\\db\\builder\\Mysql';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 解析pdo连接的dsn信息
|
||
|
|
* @access protected
|
||
|
|
* @param array $config 连接信息
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function parseDsn($config)
|
||
|
|
{
|
||
|
|
if (!empty($config['socket'])) {
|
||
|
|
$dsn = 'mysql:unix_socket=' . $config['socket'];
|
||
|
|
} elseif (!empty($config['hostport'])) {
|
||
|
|
$dsn = 'mysql:host=' . $config['hostname'] . ';port=' . $config['hostport'];
|
||
|
|
} else {
|
||
|
|
$dsn = 'mysql:host=' . $config['hostname'];
|
||
|
|
}
|
||
|
|
$dsn .= ';dbname=' . $config['database'];
|
||
|
|
|
||
|
|
if (!empty($config['charset'])) {
|
||
|
|
$dsn .= ';charset=' . $config['charset'];
|
||
|
|
}
|
||
|
|
return $dsn;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 取得数据表的字段信息
|
||
|
|
* @access public
|
||
|
|
* @param string $tableName
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public function getFields($tableName)
|
||
|
|
{
|
||
|
|
list($tableName) = explode(' ', $tableName);
|
||
|
|
if (false === strpos($tableName, '`')) {
|
||
|
|
if (strpos($tableName, '.')) {
|
||
|
|
$tableName = str_replace('.', '`.`', $tableName);
|
||
|
|
}
|
||
|
|
$tableName = '`' . $tableName . '`';
|
||
|
|
}
|
||
|
|
$sql = 'SHOW COLUMNS FROM ' . $tableName;
|
||
|
|
$pdo = $this->query($sql, [], false, true);
|
||
|
|
$result = $pdo->fetchAll(PDO::FETCH_ASSOC);
|
||
|
|
$info = [];
|
||
|
|
if ($result) {
|
||
|
|
foreach ($result as $key => $val) {
|
||
|
|
$val = array_change_key_case($val);
|
||
|
|
$info[$val['field']] = [
|
||
|
|
'name' => $val['field'],
|
||
|
|
'type' => $val['type'],
|
||
|
|
'notnull' => (bool) ('' === $val['null']), // not null is empty, null is yes
|
||
|
|
'default' => $val['default'],
|
||
|
|
'primary' => (strtolower($val['key']) == 'pri'),
|
||
|
|
'autoinc' => (strtolower($val['extra']) == 'auto_increment'),
|
||
|
|
];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $this->fieldCase($info);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 取得数据库的表信息
|
||
|
|
* @access public
|
||
|
|
* @param string $dbName
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public function getTables($dbName = '')
|
||
|
|
{
|
||
|
|
$sql = !empty($dbName) ? 'SHOW TABLES FROM ' . $dbName : 'SHOW TABLES ';
|
||
|
|
$pdo = $this->query($sql, [], false, true);
|
||
|
|
$result = $pdo->fetchAll(PDO::FETCH_ASSOC);
|
||
|
|
$info = [];
|
||
|
|
foreach ($result as $key => $val) {
|
||
|
|
$info[$key] = current($val);
|
||
|
|
}
|
||
|
|
return $info;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* SQL性能分析
|
||
|
|
* @access protected
|
||
|
|
* @param string $sql
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
protected function getExplain($sql)
|
||
|
|
{
|
||
|
|
$pdo = $this->linkID->query("EXPLAIN " . $sql);
|
||
|
|
$result = $pdo->fetch(PDO::FETCH_ASSOC);
|
||
|
|
$result = array_change_key_case($result);
|
||
|
|
if (isset($result['extra'])) {
|
||
|
|
if (strpos($result['extra'], 'filesort') || strpos($result['extra'], 'temporary')) {
|
||
|
|
Log::record('SQL:' . $this->queryStr . '[' . $result['extra'] . ']', 'warn');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
protected function supportSavepoint()
|
||
|
|
{
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|