mysql_connect提示"No such file or directory"错误"

        昨天帮朋友安装了个lnmp的集成环境,可是部署程序后,发现怎么都不行,试了好多种方式,发现都连不上mysql,因而就写了个conn mysql的例子,发现报了上面这个错误,记录下如何结局,防止下次找不到。php

    1:使用phpinfo(),找到mysql.default_socket‘, ‘mysqli.default_socket‘, andmysql

‘pdo_mysql.default_socket‘.  记住这个值; 这个是 PHP 尝试链接mysql的路径。sql

    2:个人值都是null,很奇怪,估计是之前我这儿安装过一个mysql,形成了冲突,致使此次的安装中间出现了错误。app

    3:查看当前msyql的socket路径socket

    

mysql> status
--------------
mysql  Ver 14.14 Distrib 5.7.16, for Linux (x86_64) using  EditLine wrapper

Connection id:		12
Current database:	
Current user:		root@localhost
SSL:			Not in use
Current pager:		stdout
Using outfile:		''
Using delimiter:	;
Server version:		5.5.36-log Source distribution
Protocol version:	10
Connection:		Localhost via UNIX socket
Server characterset:	utf8
Db     characterset:	utf8
Client characterset:	utf8
Conn.  characterset:	utf8
UNIX socket:		/phpstudy/data/mysql.sock
Uptime:			15 hours 56 min 0 sec

 4:在phpinfo页面找到php.ini的路径,修改以上三个值为UNIX socketcode

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