Install php5.6 on Centos 7

[Remi's RPM repository - Configuration wizard](https://rpms.remirepo.net/wizard/),
[PHP on CentOS 7 (PHP-FPM)](https://lowendbox.com/blog/php-on-centos-7-php-fpm/)

Command to install the Remi repository configuration package:

```yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm```

Command to install the yum-utils package (for the yum-config-manager command):

```yum install yum-utils```

The php56 collection is available in the remi-safe repository

Command to install:

```yum install php56```

Command to install additional packages:

```
yum install php56-php-xxx

yum install php56-php-mbstring php56-php-memcache php56-php-redis  php56-php-mysqli php56-php-pdo
```

Command to check the installed version and available extensions:

```php56 --version```

```php56 --modules```

Enable php-fpm:

```vi /etc/yum.repos.d/remi.repo```

Find **_[remi]_** and **_[remi-php56]_** block, enable this repository, you have to change **_enabled=0_** into **_enabled=1_**,
after the change the blocks look like this:

```
[remi]
name=Remi’s RPM repository for Enterprise Linux 7 – $basearch
#baseurl=http://rpms.remirepo.net/enterprise/7/remi/$basearch/
mirrorlist=http://rpms.remirepo.net/enterprise/7/remi/mirror
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi
…
[remi-php56]
name=Remi’s PHP 5.6 RPM repository for Enterprise Linux 7 – $basearch
#baseurl=http://rpms.remirepo.net/enterprise/7/php56/$basearch/
mirrorlist=http://rpms.remirepo.net/enterprise/7/php56/mirror
# WARNING: If you enable this repository, you must also enable “remi”
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi
```

Save the file. You are now ready to install PHP-FPM

`yum install php-fpm`

To ensure it also starts automatically with the server, run the following command:

`systemctl enable php-fpm`

Running:

`systemctl start php-fpm`