How to install php environment under centos

How to install the php environment under centos: first install and start apache; then install mysql; then install php through the "yum install php php-devel" command; and finally restart apache.

Recommended: "centos Getting Started Tutorial"

1. Install apache:

yum install httpd httpd-devel

Start apache:

/bin/systemctl start httpd.service

At this time, enter the IP address of the server in the browser address bar. You should see the apache service page. There is no need to enter the port. Apache uses port 80 by default. If the port changes If you lose, you will lose.
You may not be able to access it. You need to turn off the
firewall in Centos 7:

 systemctl stop firewalld.service #停止firewall
 systemctl disable firewalld.service #禁止firewall开机启动
 firewall-cmd --state #查看默认防火墙状态（关闭后显示notrunning，开启后显示running）

2. Install mysql:

yum install mysql mysql-server

Start mysql:

systemctl start mysql.service

To This is the prompt when starting the MySQL database

Failed to start mysqld.service: Unit not found

The solution is as follows:
First you need to install mariadb-server

yum install -y mariadb-server

Start the service

systemctl start mariadb.service

Add to boot

systemctl enable mariadb.service

This is complete!
You can test it

mysql -u root -p

3. Install php

yum install php php-devel

Restart apache to make php take effect

/bin/systemctl start httpd.service

At this time, you can in the directory ：Create a PHP file index.php under /var/www/html/, add the code:

Then access this file in the browser, you can see some information about PHP, the php.ini configuration file The path can be seen on this page

If you want to install the PHP7 version, please see the following operations

Install PHP7 through yum on centos7, first run it in the terminal:

rpm -Uvh htt[ps](http://www.111cn.net/fw/photo.html)://mirror.webtatic.com/yum/el7/webtatic-release.rpm

Prompt error :

error: Failed dependencies:

epel-release >= 7 is needed by webtatic-release-7-3.noarch

Need to install epel-release first.

1. Install epel-release

Pass the command:

rpm -ivh http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

Successfully installed.

2. Install PHP7

Run the following command again on the terminal:

rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm

Successfully obtain the yum source of PHP7, and then execute it again:

yum install php70w

You're done .

3. Verify installation

Terminal command: php -v, displays the current PHP version, the information is as follows:

[root@iZ94w0kemvtZ /]# php -v
PHP 7.0.2 (cli) (built: Jan  9 2016 14:00:11) ( NTS )
Copyright (c) 1997-2015 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2015 Zend Technologies

In this way, PHP7 is successfully installed through yum under CentOS 7.

Install php 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

/bin/systemctl start httpd.service

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