71 lines
1.9 KiB
PHP
71 lines
1.9 KiB
PHP
<?php
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/**
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* Db操作
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*/
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namespace server\components;
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use server\lib\Connection;
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class Db {
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private static $_instance;
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private static $_reconnectNum = 3;
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/**
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* 获取实例
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*
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* @param string $configName
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* @return Connection
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* @throws \Exception
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*/
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public static function instance($configName = 'customerservice')
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{
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try{
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global $configFile;
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if (empty(self::$_instance[$configName])) {
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echo date('Y-m-d H:i:s')."重新实例化MYSQL.......".PHP_EOL;
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self::$_instance[$configName] = new Connection($configFile['mysql']['host'], $configFile['mysql']['port'],
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$configFile['mysql']['username'], $configFile['mysql']['password'], $configFile['mysql']['dbname'], $configFile['mysql']['charset']);
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}
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}catch (\Exception $e){
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if(self::$_reconnectNum > 0){
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self::$_reconnectNum --;
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usleep(500000);
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if(!empty(self::$_instance[$configName])){
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self::$_instance[$configName] = '';
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}
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return self::instance();
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}else{
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echo "Mysql连接超时：" . $e->getMessage() . "\n";
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}
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}
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return self::$_instance[$configName];
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}
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/**
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* 关闭数据库实例
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*
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* @param string $configName
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*/
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public static function close($configName)
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{
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if (isset(self::$_instance[$configName]) && self::$_instance[$configName] instanceof Connection) {
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self::$_instance[$configName]->closeConnection();
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self::$_instance[$configName] = null;
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}
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}
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/**
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* 关闭所有数据库实例
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*/
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public static function closeAll()
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{
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foreach (self::$_instance as $connection) {
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if($connection instanceof Connection)
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$connection->closeConnection();
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}
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self::$_instance = [];
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}
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} |