php mysql連接不上的解決方法：1、建立一個PHP檔案顯示「phpinfo()」；2、取得MySQL socket路徑；3、重新配置PHP；4、重啟nginx或apache即可。
本文操作環境：Windows7系統、PHP5.5.34版、DELL G3電腦
php mysql不去怎麼辦？
PHP連線不上MySQL解決方案總結
1. 取得目前 mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket 設定資訊
建立一個PHP 檔案, 顯示phpinfo():
用瀏覽器開啟:
在此頁面，找到mysql .default_socket、mysqli.default_socket、pdo_mysql.default_socket訊息:
#2.取得MySQL socket 路徑
透過控制台進入MySQL, 輸入指令: STATUS, 尋找UNIX socket 值#mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8Server 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: 8Current database:
Current user: root@localhost
SSL: Not in use
Current pager: lessUsing outfile: ‘‘
Using delimiter: ;
Server version: 5.7.11 MySQL Community Server (GPL)
Protocol version: 10Connection: 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--------------
. 這時候, 你比較 mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket 和透過 MySQL UNIX socket 發現不一樣, 這就是 mysql_connect(); . 重新配置PHP, 打開php.ini
修改mysql.default_socket、mysqli.default_socket、pdo_mysql.default_socket 的值為:/tmp/mysql.sock
pdo_mysql.default_socket=/tmp/mysql.sock mysql.default_socket=/tmp/mysql.sock mysqli.default_socket=/tmp/mysql.sock
[client] socket=/tmp/mysql.sock [mysqld] socket=/tmp/mysql.sock
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