What is the correct way to install php environment in centos7

The correct way to install the php environment in centos7 is: 1. Execute the [yum install httpd] command to install apache; 2. Install the mysql database; 3. Execute the [yum install php php-server] command to install php.

The installation steps are as follows:

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1 , first install apache:

yum install httpd

Configure ServerName, enter the httpd.conf file:

vi /etc/httpd/conf/httpd.conf

Change #ServerName www.example.com:80 to ServerName localhost:80

Apache uses port 80 by default

Firewall opens port 80 for external access

firewall-cmd --permanent --zone=public --add-port=80/tcp //添加80端口
firewall-cmd --reload //生效

Check again whether it is enabled:

firewall-cmd --permanent --zone=public --list-ports //查看开放端口列表

Start apache:

systemctl start httpd.service

2. Install mysql:

yum install mysql mysql-server

Start mysql:

systemctl start mysqld.service

3. Install php

yum install php php-devel

Restart apache to make php take effect

systemctl restart httpd.service

At this time, you can go to the directory:/ Create a PHP file under var/www/html/

Code:

<?php 
    phpinfo(); 
?>

Access this file in the browser, you can see some information about PHP

Install php The extension

yum install php-mysql php-gd php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc

After installing the extension, you need to restart apache again

systemctl restart httpd.service

The php code to test whether the mysql link is successful

<?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";
?>

You can pass the above code into the directory /var/ www/html/

Access this file in the browser. If the output connection is successful, the configuration is OK.

Attachment: Apache default configuration file path:

The root directory of the website points to the /var/www/html directory

The main configuration file is /etc/httpd/conf/httpd .conf

is stored in the /etc/httpd/conf.d/ directory

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