Jul 24

macOS下php连接mysql遇到的问题 不指定

djangowang , 10:01 , 工作相关 » macOS , 评论(0) , 引用(0) , 阅读(156) , Via 本站原创 | |
昨天macOS系统上装lamp环境时遇到了php在连接mysql的问题,查了半天才解决这里来介绍一些解决的过程。首先确认一下各环境是否已经安装,Linux -> macOS 就不用说了,apache macOS上自带稍等介绍一下目录位置,php系统也是自带的只需要安装mysql。这里以mysql-8.0.11为例可以在(https://dev.mysql.com/downloads/mysql/)下载到。
点击在新窗口中浏览此图片

mysql环境安装
安装图形化就不必过多介绍,mysql安装后位置在/usr/local/mysql。可以编辑sudo vim /etc/profile将路径加入环境变量方便调用到。

export PATH=$PATH:/usr/local/mysql/bin/


问题
当mysql配置好后在php连接mysql时会报以下错误,原因是mysql8默认使用caching_sha2_password作为默认的身份验证插件,而不再是mysql_native_password,但是客户端暂时不支持这个插件导致的。


Next PDOException: SQLSTATE[HY000] [2054] The server requested authentication method unknown to the client [caching_sha2_password]


怎么办?
1.  macOS安装mysql后默认没有my.cnf,我们可以在/etc/my.cnf自行创建一个内容如下。创建以下配置文件后记得重启mysql 重启路径在/usr/local/mysql/support-files/执行以下

mysql.server restart


/etc/my.cnf文件内容如下。

# Example MySQL config file for medium systems.  
#  
# This is for a system with little memory (32M - 64M) where MySQL plays  
# an important part, or systems up to 128M where MySQL is used together with  
# other programs (such as a web server)  
#  
# MySQL programs look for option files in a set of  
# locations which depend on the deployment platform.  
# You can copy this option file to one of those  
# locations. For information about these locations, see:  
# http://dev.mysql.com/doc/mysql/en/option-files.html  
#  
# In this file, you can use all long options that a program supports.  
# If you want to know which options a program supports, run the program  
# with the "--help" option.  
# The following options will be passed to all MySQL clients  
[client]
default-character-set=utf8
#password   = your_password  
port        = 3306  
socket      = /tmp/mysql.sock  
# Here follows entries for some specific programs  
# The MySQL server  
[mysqld]
character-set-server=utf8
init_connect='SET NAMES utf8
port        = 3306  
socket      = /tmp/mysql.sock  
skip-external-locking  
key_buffer_size = 16M  
max_allowed_packet = 1M  
table_open_cache = 64  
sort_buffer_size = 512K  
net_buffer_length = 8K  
read_buffer_size = 256K  
read_rnd_buffer_size = 512K  
myisam_sort_buffer_size = 8M  
character-set-server=utf8  
  init_connect='SET NAMES utf8'
# Don't listen on a TCP/IP port at all. This can be a security enhancement,  
# if all processes that need to connect to mysqld run on the same host.  
# All interaction with mysqld must be made via Unix sockets or named pipes.  
# Note that using this option without enabling named pipes on Windows  
# (via the "enable-named-pipe" option) will render mysqld useless!  
#  
#skip-networking  

# Replication Master Server (default)  
# binary logging is required for replication  
log-bin=mysql-bin  

# binary logging format - mixed recommended  
binlog_format=mixed  

# required unique id between 1 and 2^32 - 1  
# defaults to 1 if master-host is not set  
# but will not function as a master if omitted  
server-id   = 1  

# Replication Slave (comment out master section to use this)  
#  
# To configure this host as a replication slave, you can choose between  
# two methods :  
#  
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -  
#    the syntax is:  
#  
#    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,  
#    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;  
#  
#    where you replace <host>, <user>, <password> by quoted strings and  
#    <port> by the master's port number (3306 by default).  
#  
#    Example:  
#  
#    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,  
#    MASTER_USER='joe', MASTER_PASSWORD='secret';  
#  
# OR  
#  
# 2) Set the variables below. However, in case you choose this method, then  
#    start replication for the first time (even unsuccessfully, for example  
#    if you mistyped the password in master-password and the slave fails to  
#    connect), the slave will create a master.info file, and any later  
#    change in this file to the variables' values below will be ignored and  
#    overridden by the content of the master.info file, unless you shutdown  
#    the slave server, delete master.info and restart the slaver server.  
#    For that reason, you may want to leave the lines below untouched  
#    (commented) and instead use CHANGE MASTER TO (see above)  
#  
# required unique id between 2 and 2^32 - 1  
# (and different from the master)  
# defaults to 2 if master-host is set  
# but will not function as a slave if omitted  
#server-id       = 2  
#  
# The replication master for this slave - required  
#master-host     =   <hostname>  
#  
# The username the slave will use for authentication when connecting  
# to the master - required  
#master-user     =   <username>  
#  
# The password the slave will authenticate with when connecting to  
# the master - required  
#master-password =   <password>  
#  
# The port the master is listening on.  
# optional - defaults to 3306  
#master-port     =  <port>  
#  
# binary logging - not required for slaves, but recommended  
#log-bin=mysql-bin  

# Uncomment the following if you are using InnoDB tables  
#innodb_data_home_dir = /usr/local/mysql/data  
#innodb_data_file_path = ibdata1:10M:autoextend  
#innodb_log_group_home_dir = /usr/local/mysql/data  
# You can set .._buffer_pool_size up to 50 - 80 %  
# of RAM but beware of setting memory usage too high  
#innodb_buffer_pool_size = 16M  
#innodb_additional_mem_pool_size = 2M  
# Set .._log_file_size to 25 % of buffer pool size  
#innodb_log_file_size = 5M  
#innodb_log_buffer_size = 8M  
#innodb_flush_log_at_trx_commit = 1  
#innodb_lock_wait_timeout = 50  

[mysqldump]  
quick  
max_allowed_packet = 16M  

[mysql]  
no-auto-rehash  
# Remove the next comment character if you are not familiar with SQL  
#safe-updates  
default-character-set=utf8  

[myisamchk]  
key_buffer_size = 20M  
sort_buffer_size = 20M  
read_buffer = 2M  
write_buffer = 2M  

[mysqlhotcopy]  
interactive-timeout


2.在my.cnf中的[mysqld]中添加下边的代码。

default_authentication_plugin=mysql_native_password


3.更改用户连接方式。
1 连接mysql:

mysql -hlocalhost -u账户名 -p -P端口号 mysql


2. 创建一个用户以"mysql_native_password" 方式连接:

CREATE USER '用户名' IDENTIFIED WITH 'mysql_native_password' BY '密码';
GRANT ALL PRIVILEGES ON *.* TO '用户名'@'%';


3.修改root连接方式

UPDATE `user` SET `Host`='%' WHERE `User`='root';
ALTER USER 'root' IDENTIFIED WITH 'mysql_native_password' BY '密码';


再次测试连接成功。

php测试代码

<?php
    $servername = "localhost"; $username = "username"; $password = "password"; // 创建连接
    $conn = new mysqli($servername, $username, $password); // 检测连接
     if ($conn->connect_error) {
         die("连接失败: " . $conn->connect_error);
     }
     echo "连接成功";
?>


macOS 下apache配置相关
1. apache的配置目录在/private/etc/apache2/。
2. 需要打开apache加载php功能。sudo vim /private/etc/apache2/httpd.conf 去掉(LoadModule php7_module libexec/apache2/libphp7.so)前面注释。
3. 发布目录在/Library/WebServer/Documents/。




参考:
https://www.shiqidu.com/d/358
https://www.51-n.com/t-4578-1-1.html
http://www.runoob.com/php/php-mysql-connect.html
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