说明:
1. 运行环境: Mac OS X 10.11.4 (Mac 已经自带 Apache, PHP)
2. 相关文件夹:
/etc/apache2/ ##Apache 配置文件夹
/Library/WebServer/Documents/ ##Apache 默认站点
/usr/local/mysql-5.7.11-osx10.9-x86_64 ##mysql安装路径
/private/php.ini.default ##php的配置文件: 如配置 mysql.sock
>>问题原因:
For some reason mysql on OS X gets the locations of the required socket file a bit wrong, but thankfully the solution is as simple as setting up a symbolic link.
You may have a socket (appearing as a zero length file) as /tmp/mysql.sock or /var/mysql/mysql.sock but 1 or more apps is looking in the other location for it.
大神解释说: PHP 在 MySQL socket 方面, 默认的配置有问题. 那么现在只要修改 PHP 的配置文件, 配置正确的 MySQL socket 路径就可以了.
>>解决方案:
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():
echo 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 Mac 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(默认位置是: /private/etc/php.ini )
cd /private/etc/
chmod +rwx php.ini ##修改文件权限
vim php.ini
之后修改mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket 的值为: /tmp/mysql.sock
(一共修改三处，分别为：mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket)
注意:
若用 vim php.ini 打开的文件为空(我操作的时候, 就是这样), 说明没有 php.ini 这个文件
这个时候, 你浏览 /etc/ 文件夹下, 会有 php.ini.default 文件, 复制 php.ini.default 重命名为 php.ini , 再用 vim 修改文件内容
cd /private/etc/
cp php.ini.default php.ini ##复制 php.ini.default, 并且重命名
chmod +rwx php.ini ##修改文件权限
vim php.ini
5,重启apache
sudo apachectl restart ##重启 apache
