mysql数据库连接不上php?

发布网友发布时间：2022-04-24 09:55

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共2个回答

懂视网时间：2022-04-29 18:32

php与mysql连接不上的解决办法：

1、获取当前 mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket 配置信息

建立一个 PHP 文件, 显示 phpinfo():

用浏览器打开:

在此页面，找到mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket信息:

2、获取 MySQL socket 路径

通过控制台进入 MySQL, 输入命令: STATUS, 查找 UNIX socket 值

#mysql -u root -p
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 5.7.11 MySQL Community Server (GPL)
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.
mysql> STATUS
--------------
mysql Ver 14.14 Distrib 5.7.11, for osx10.9 (x86_64) using EditLine wrapper
Connection id: 8
Current database: 
Current user: root@localhost
SSL:  Not in use
Current pager: less
Using outfile: ‘‘
Using delimiter: ;
Server version: 5.7.11 MySQL Community Server (GPL)
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: utf8
Db characterset: utf8
Client characterset: utf8
Conn. characterset: utf8
UNIX socket: /tmp/mysql.sock
Uptime:  8 days 15 hours 1 min 17 sec
Threads: 2 Questions: 21 Slow queries: 0 Opens: 114 Flush tables: 1 Open tables: 0 Queries per second avg: 0.000
--------------

3、这时候, 你对比 mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket 和通过 MySQL UNIX socket 发现不一样, 这就是 mysql_connect(); 警告的原因: PHP 配置 mysql 有问题.

4、重新配置 PHP, 打开php.ini修改mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket 的值为: /tmp/mysql.sock

pdo_mysql.default_socket=/tmp/mysql.sock 
mysql.default_socket=/tmp/mysql.sock 
mysqli.default_socket=/tmp/mysql.sock

或者修改my.cnf的socket：

[client] 
socket=/tmp/mysql.sock 
 
[mysqld] 
socket=/tmp/mysql.sock

5、重启nginx或者apache

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热心网友时间：2022-04-29 15:40

换pdo 或者百mysqli

<?php//pdo try { $dbh = new PDO('mysql:host=localhost;dbname=test', $user, $pass);} catch (PDOException $e) { die("Error!: " . $e->getMessage() . "");}?> //创建mysqli对象方度式 1//屏蔽连知接产生的错误$mysqli = new mysqli('127.0.0.1', 'root', '', 'test');//只能用函数来判断道是否连接成功回if(mysqli_connect_errno()){ echo mysqli_connect_error();}//创建mysqli对象方式 2 可以设置一些参答数$mysqli = mysqli_init();$mysqli->options(MYSQLI_OPT_CONNECT_TIMEOUT, 2);//设置超时时间$mysqli->real_connect('127.0.0.1', 'root', '', 'test');