Ubuntu16.04 build php5.6 Web server environment

Ubuntu 16.04 installs php7.0 environment by default, but php7 is currently not very compatible with some old systems. If you install php5 by yourself, you need to clear the installed package of php7, otherwise an error will be reported.

Remove the default and installed PHP packages

sudo dpkg -l | grep php| awk '{print $2}'|tr "\n"" "
sudo apt-get install aptitude
sudo aptitude purge `dpkg -l | grep php| awk '{print $2}' |tr "\n" " "`

Add PPA

sudo add-apt-repository ppa:ondrej/php

Install php5.6

sudo apt-get update
sudo apt-get install php5.6

Install extension

sudo apt-get install php5.6-gd
sudo apt-get install php5.6-mysql

Install Apache2

sudo apt install apache2
sudo apt-get install libapache2-mod-php5.6

**Install **MySQL

sudo apt install mysql-server php5.6-mysql  root root0x0
sudo apt-get install mysql-client
mysql_secure_installation

Install phpmyadmin

sudo apt-get install phpmyadmin
sudo apt-get install php5.6-mbstring
sudo apt-get install php5.6-gettext
sudo ln -s /usr/share/phpmyadmin /var/www/html/phpmyadmin

Configure phpmyadmin

nano /etc/php/5.6/apache2/php.ini
display_errors =On(Display the error log, if it appears twice, you must change it, otherwise it will be invalid)
extension=php_mbstring.dll(Open mbstring)
sudo dpkg-reconfigure phpmyadmin(Reconfigure phpmyadmin)

Add website

sudo ln -s /etc/apache2/sites-available/files.conf /etc/apache2/sites-enabled/files.conf
sudo chown -R www-data /var/www/tianya
sudo /etc/init.d/apache2 restart

Add FTP

sudo apt install vsftpd
useradd -d /var/www/tianya -s /sbin/nologin myftp
passwd myftp
chmod 777-R /var/www/tianya
usermod -s /sbin/nologin myftp
vim /etc/vsftpd.conf
vim /etc/vsftpd.chroot_list
service vsftpd restart
service vsftpd status
# Example config file /etc/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
#
# Run standalone? vsftpd can run either from an inetd or as a standalone
# daemon started from an initscript.
# userlist_enable=YES
# userlist_deny=NO
# userlist_file=/etc/vsftpd.user_list
listen=YES
#
# Run standalone with IPv6?
# Like the listen parameter, except vsftpd will listen on an IPv6 socket
# instead of an IPv4 one. This parameter and the listen parameter are mutually
# exclusive.
# listen_ipv6=YES
#
# Allow anonymous FTP?(Disabled by default)
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that(022 is used by most other ftpd's)
local_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
# anon_upload_enable=YES
#
# Uncomment thisif you want the anonymous FTP user to be able to create
# newdirectories.
# anon_mkdir_write_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# If enabled, vsftpd will display directory listings with the time
# in your local time zone. The default is to display GMT. The
# times returned by the MDTM FTP command are also affected by this
# option.
use_localtime=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20(ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root"for uploaded files is not
# recommended!
# chown_uploads=YES
# chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
xferlog_file=/var/log/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format.
# Note that the default log file location is /var/log/xferlog inthiscase.
xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
# idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
# data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
# nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended forsecurity(the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
# async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack(DoS) via the command "SIZE /big/file"in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
# ascii_upload_enable=YES
# ascii_download_enable=YES
#
# You may fully customise the login banner string:
ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
# deny_email_enable=YES
# ( default follows)
# banned_email_file=/etc/vsftpd.banned_emails
#
# You may restrict local users to their home directories. See the FAQ for
# the possible risks inthis before using chroot_local_user or
# chroot_list_enable below.
# chroot_local_user=YES
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
# ( Warning! chroot'ing can be very dangerous. If using chroot, make sure that
# the user does not have write access to the top level directory within the
# chroot)
chroot_local_user=YES
chroot_list_enable=YES
# ( default follows)
chroot_list_file=/etc/vsftpd.chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as"ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong casefor enabling it.
# ls_recurse_enable=YES
#
# Customization
#
# Some of vsftpd's settings don't fit the filesystem layout by
# default.
#
# This option should be the name of a directory which is empty. Also, the
# directory should not be writable by the ftp user. This directory is used
# as a secure chroot() jail at times vsftpd does not require filesystem
# access.
secure_chroot_dir=/var/run/vsftpd/empty
#
# This string is the name of the PAM service vsftpd will use.
pam_service_name=vsftpd
#
# This option specifies the location of the RSA certificate to use for SSL
# encrypted connections.
rsa_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
# This option specifies the location of the RSA key to use for SSL
# encrypted connections.
rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key

to sum up

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