How to install and build a PHP+Apache+Mysql server environment on CentOS

1: Install mysql

1. Install yum install mysql mysql-server mysql-devel

2. Start mysql /etc/init.d/mysqld start

3. Set the initial password for mysql (the default is no password after the mysql installation is completed. A warning message will appear when starting mysql without setting a password)

Password setting method: Assume the password is set to 123456

mysqladmin -u root password 123456

4. Set remote login permissions (if you need to connect to mysql remotely, perform the following operations)

Log in to mysql: mysql -u root -p

Enter the password (the password is not visible, just enter it directly)

Use the following command to assign the remote connection account

mysql> grant all privileges on *.* to '用户名'@'远程地址' identified by '密码' with grant option;
mysql> flush privileges;

2: Install apache

yum install httpd httpd-devel

After the installation is completed, there is no need to rush to start. First complete the following php installation steps

3: Install php and plug-ins

yum install php php-mysql php-common php-gd php-xml php-mbstring php-ldap php-pear php-xmlrpc

Four: Start apache

/etc/init.d/httpd start

So far, the server environment of php apache mysql has been set up.

Set apache's httpd service to start at startup: chkconfig httpd on

Set the mysql service to start at startup: chkconfig mysqld on

After apache is installed, the default path of the root directory is /var/www/html/. At this time, you can create php files in some directories, such as: index.php, enter the code:

<?php phpinfo(); ?>

Use a browser to access the server ip, if the configuration is successful, you can see the following page:

If no abnormality occurs in the above steps, but the page cannot be accessed, make sure that the address you entered is correct. premise, please check the firewall policy.

The following provides a simple method to determine whether port 80 is blocked by the firewall.

Turn off the firewall service (it is not recommended to turn off the firewall policy after the server is put into use): service iptables stop

After the firewall service is turned off, please try again to see if you can access it normally.

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