public function run($table)
{
if (!$table) {
throw new Exception('Tool class table name has not been set.');
}
$db = DbBase::createMaster();
$fieldList = $db->getConnection()->query('describe ' . $table)->fetchAll(\Pdo::FETCH_ASSOC);
return $fieldList;
}
/**
* 转义SQL 语句中使用的字符串中的特殊字符
*
* 数组转换：仅支持单维数组
* array('fafdas', 'fd', 'eeee', 'bbbbb')
* ↓↓↓↓
* 'fafdas', 'fd', 'eeee', 'bbbbb'
*
* @param string|int|array $value
* @return string
*/
public function escape($value)
{
$this->setAdapter();
if (is_array($value)) {
$inArray = array();
foreach ($value as $item) {
$inArray[] = $this->adapter->getConnection()->quote($item);
}
return implode(',', $inArray);
} else {
return $this->adapter->getConnection()->quote($value);
}
}
/**
* 貌似Mysql执行过程中抛出PDOException，回退才有效
*
* 在系统代码内部手工抛出异常并不能影响结果。
* @TODO 还需要进一步确认。不然就不能人工撤销了。
*/
private function testMysql()
{
$dbAdapter = \HuiLib\Db\DbBase::createMaster();
try {
$dbAdapter->beginTransaction();
$dbAdapter->getConnection()->query("insert into test.test set field1=22222, field2=3333");
$dbAdapter->getConnection()->query("insert into test.test set field1=0000, field0=00000");
//Field0不存在
$dbAdapter->commit();
} catch (\Exception $e) {
print_r($e);
$dbAdapter->rollback();
}
}
protected function __construct($config)
{
$driverConfig = empty($config['driver']) ? '' : Front::getInstance()->getAppConfig()->getByKey($config['driver']);
if (empty($config['driver']) || empty($driverConfig)) {
throw new \HuiLib\Error\Exception('Log mysql driver ini error');
}
$this->driver = DbBase::create($driverConfig);
if (!$this->driver instanceof \HuiLib\Db\Adapter\Pdo\PdoBase) {
throw new \HuiLib\Error\Exception('Log mysql driver initialized failed');
}
if (empty($config['table'])) {
throw new \HuiLib\Error\Exception('Log mysql driver table ini error');
}
$this->table = $config['table'];
parent::__construct($config);
}
private function testSlave()
{
$salve = \HuiLib\Db\DbBase::createSlave();
$db = \HuiLib\Db\DbBase::createSlave()->getConnection();
$time = time();
var_dump($time % 2);
try {
$salve->beginTransaction();
$db->query("update test.test set field1='{$time}' where id=2 ");
//! 优先级高于 %
if (!($time % 2)) {
throw new \Exception('error');
}
$salve->commit();
} catch (\Exception $e) {
$salve->rollBack();
echo 'error exception, time:' . $time . ' e:' . $e->getMessage();
}
}
<?php
//HuiLib Db库操作指南
//HuiLib Db库由连接器Adapter和查询器Query组成。Query封装了Delete, Insert, Select, Update, Where等相关概念。
//创建原始数据连接通过DbBase类。可以通过封装过的Query类实现快速查询。
//支持事务封装，提倡使用INNODB等支持事务的储存引擎。
//一、创建原始数据库连接
//1.1 以下创建数据库主库连接，返回Adapter对象：
$db = \HuiLib\Db\DbBase::createMaster();
//1.2 获取数据库连接Pdo对象或实际连接对象：
$connect = $db->getConnection();
//1.3 直接发起请求：
$connect->query("select count(*) from test.test");
//二、Query组件查询
//2.1 Select部分
//2.1.1 创建select对象
$select = \HuiLib\Db\Query::select();
//2.1.2 设置查询表格等操作
$select->table('test');
//2.1.3 Where条件设置支持三种形式：
//键值式(createPair)
$select->where(Where::createPair('id', 2));
//=> id='2'
//文本式(createPlain)
$select->where(Where::createPlain("name is null"));
//=>"name is null"
//占位式(createQuote)
$select->where(Where::createQuote('id=?', 2));
//=>"id='2'"
//同时支持绑定式
$select->where(Where::createPlain('t.id=:id'));
