strange : 2 php version on the same server

Question

I need to upgrade php 5.4 to 5.6 to use my framework magento 2. I apply these commands :

echo "deb http://packages.dotdeb.org wheezy-php56 all" >> /etc/apt/sources.list.d/dotdeb.list echo "deb-src http://packages.dotdeb.org wheezy-php56 all" >> /etc/apt/sources.list.d/dotdeb.list wget http://www.dotdeb.org/dotdeb.gpg -O- | apt-key add - apt-get update apt-get install php5-cli php5-fpm

It works I have that now in SSH :

# php -v PHP 5.6.30-1~dotdeb+7.1 (cli) (built: Jan 21 2017 14:50:59) Copyright (c) 1997-2016 The PHP Group Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies 

But Magento 2 does not works and when I put echo phpversion(); in the index.php, I have this version ! 5.4.45-0+deb7u5

I am on debian and I do not understand how I can have 2 other php versions on the same server

Can you help me ?

EDIT:

Content of /etc/apache2/mods-available :

actions.conf deflate.conf php5_cgi.load.dpkg-remove actions.load deflate.load php5.conf alias.conf dir.conf php5.conf.dpkg-new alias.load dir.load php5.load asis.load disk_cache.conf php5.load.dpkg-new auth_basic.load disk_cache.load proxy_ajp.load auth_digest.load dump_io.load proxy_balancer.conf authn_alias.load env.load proxy_balancer.load authn_anon.load expires.load proxy.conf authn_dbd.load ext_filter.load proxy_connect.load authn_dbm.load file_cache.load proxy_ftp.conf authn_default.load filter.load proxy_ftp.load authn_file.load headers.load proxy_http.load authnz_ldap.load ident.load proxy.load authz_dbm.load imagemap.load proxy_scgi.load authz_default.load include.load reqtimeout.conf authz_groupfile.load info.conf reqtimeout.load authz_host.load info.load rewrite.load authz_owner.load ldap.conf setenvif.conf authz_user.load ldap.load setenvif.load autoindex.conf log_forensic.load speling.load autoindex.load mem_cache.conf ssl.conf cache.load mem_cache.load ssl.load cern_meta.load mime.conf status.conf cgid.conf mime.load status.load cgid.load mime_magic.conf substitute.load cgi.load mime_magic.load suexec.load charset_lite.load negotiation.conf unique_id.load dav_fs.conf negotiation.load userdir.conf dav_fs.load php5_cgi.conf.dpkg-new userdir.load dav.load php5-cgi.conf.dpkg-new usertrack.load dav_lock.load php5_cgi.conf.dpkg-remove vhost_alias.load dbd.load php5_cgi.load.dpkg-new 

Content of /etc/apache2/mods-enabled :

alias.conf autoindex.load mime.conf setenvif.conf alias.load cgi.load mime.load setenvif.load auth_basic.load deflate.conf negotiation.conf ssl.conf authn_file.load deflate.load negotiation.load ssl.load authz_default.load dir.conf php5.conf status.conf authz_groupfile.load dir.load php5.load status.load authz_host.load env.load reqtimeout.conf authz_user.load expires.load reqtimeout.load autoindex.conf headers.load rewrite.load 

Answer 1

In default installation, php is installed as apache-module. e.g. package libapache2-mod-php5

other possibilities to include php to apache could be cgi, fast-cgi, fcgid... (here you have to search in the *cgi*-config for the path to the php-binary. But I guess you are using php as apache module so check the following.

search for php-packages:

# dpkg -l | grep php ii libapache2-mod-php5 5.6.29-1~dotdeb+7.1 [...] 

if you have not this version number, check if the package is installed from the dotdebian-repository. (the default selected version for install is marked with *** before the version number)

You could check from which repository a package would be installed with apt-cache.

# apt-cache policy libapache2-mod-php5 

Installing a package from an explicit repository could be done with the -t switch

# apt-get -t wheezy-php56 install libapache2-mod-php5 

what about the php on commandline?

when you run "php" on commandline another binary is executed.

find out which binary is used and which packaged installed it:

# dpkg -S $(readlink -f $(which php)) php5-cli: /usr/bin/php5 

In this example, the package php5-cli ships the binary used when typing "php" in the console.