Ubuntu16.04 PHP7 TO PHP5.6

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PHP7 TO PHP5.6

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remove PHP installed

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1. List the installed php pkg

root@VM-13-184-ubuntu:~# dpkg -l | grep php7
ii  libapache2-mod-php7.0              7.0.13-0ubuntu0.16.04.1             amd64        server-side, HTML-embedded scripting language (Apache 2 module)
ii  php7.0                             7.0.13-0ubuntu0.16.04.1             all          server-side, HTML-embedded scripting language (metapackage)
ii  php7.0-cli                         7.0.13-0ubuntu0.16.04.1             amd64        command-line interpreter for the PHP scripting language
ii  php7.0-common                      7.0.13-0ubuntu0.16.04.1             amd64        documentation, examples and common module for PHP
ii  php7.0-curl                        7.0.13-0ubuntu0.16.04.1             amd64        CURL module for PHP
ii  php7.0-gd                          7.0.13-0ubuntu0.16.04.1             amd64        GD module for PHP
ii  php7.0-imap                        7.0.13-0ubuntu0.16.04.1             amd64        IMAP module for PHP
ii  php7.0-intl                        7.0.13-0ubuntu0.16.04.1             amd64        Internationalisation module for PHP
ii  php7.0-json                        7.0.13-0ubuntu0.16.04.1             amd64        JSON module for PHP
ii  php7.0-mbstring                    7.0.13-0ubuntu0.16.04.1             amd64        MBSTRING module for PHP
ii  php7.0-mcrypt                      7.0.13-0ubuntu0.16.04.1             amd64        libmcrypt module for PHP
ii  php7.0-mysql                       7.0.13-0ubuntu0.16.04.1             amd64        MySQL module for PHP
ii  php7.0-opcache                     7.0.13-0ubuntu0.16.04.1             amd64        Zend OpCache module for PHP
ii  php7.0-pspell                      7.0.13-0ubuntu0.16.04.1             amd64        pspell module for PHP
ii  php7.0-readline                    7.0.13-0ubuntu0.16.04.1             amd64        readline module for PHP
ii  php7.0-recode                      7.0.13-0ubuntu0.16.04.1             amd64        recode module for PHP
ii  php7.0-sqlite3                     7.0.13-0ubuntu0.16.04.1             amd64        SQLite3 module for PHP
ii  php7.0-tidy                        7.0.13-0ubuntu0.16.04.1             amd64        tidy module for PHP
ii  php7.0-xml                         7.0.13-0ubuntu0.16.04.1             amd64        DOM, SimpleXML, WDDX, XML, and XSL module for PHP
ii  php7.0-xmlrpc                      7.0.13-0ubuntu0.16.04.1             amd64        XMLRPC-EPI module for PHP
ii  php7.0-xsl                         7.0.13-0ubuntu0.16.04.1             all          XSL module for PHP (dummy)

1. remove the installed php pkg

dpkg -l | grep php7 | awk '{print $2}' | tr "\n" " "

sudo aptitude purge `dpkg -l | grep php7| awk '{print $2}' |tr "\n" " "`

1. the remove error

mysql_upgrade: Got error: 1045: Access denied for user ‘root’@’localhost’ (using password: NO) while connecting to the MySQL server

修改MySQL root用户密码

mysqladmin command to change root password

$ mysqladmin -u root password NEWPASSWORD
root@VM-13-184-ubuntu:~# mysqladmin -u root -p'oldpassword' password'newpassword'
mysqladmin: [Warning] Using a password on the command line interface can be insecure.
New password: 
Confirm new password: 
Warning: Since password will be sent to server in plain text, use ssl connection to ensure password safety.

update user set password=PASSWORD(“”) where User=’root’

安装php5.6

apt-get install php5.6 libapache2-mod-php5.6
apt-get -y install php5.6-mysql php5.6-curl php5.6-gd php5.6-intl php-pear php-imagick php5.6-imap php5.6-mcrypt php-memcache php5.6-pspell php5.6-recode php5.6-sqlite3 php5.6-tidy php5.6-xmlrpc php5.6-xsl php5.6-mbstring php-gettext