[horde] An error occured by the horde groupware installation (PHP Fatal error: Allowed memory size)

[Michael Freitter]

Greeting,

I have a completely new vServer with Ubuntu 14.04.1 LTS and I want to
install horde groupware.
I have read the installation manual and I starting the installation up to
the point where an error occurred:

install ok: channel://pear.horde.org/Horde_Idna-1.0.1
install ok: channel://pear.horde.org/Horde_Xml_Element-2.0.2
install ok: channel://pear.horde.org/Horde_Socket_Client-1.1.2
install ok: channel://pear.horde.org/Horde_Db-2.2.2
install ok: channel://pear.horde.org/Horde_Controller-2.0.2
install ok: channel://pear.horde.org/Horde_Cache-2.5.0
install ok: channel://pear.horde.org/Horde_Editor-2.0.4
install ok: channel://pear.horde.org/Horde_View-2.0.4
install ok: channel://pear.horde.org/Horde_Alarm-2.2.4
install ok: channel://pear.horde.org/Horde_Http-2.1.3
install ok: channel://pear.horde.org/Horde_Image-2.2.0
install ok: channel://pear.horde.org/Horde_Mail-2.5.1
install ok: channel://pear.horde.org/Horde_Token-2.0.6
install ok: channel://pear.horde.org/Horde_Text_Filter-2.2.2
install ok: channel://pear.horde.org/Horde_Tree-2.0.3
install ok: channel://pear.horde.org/Horde_Date_Parser-2.0.3
install ok: channel://pear.horde.org/Horde_Lock-2.1.1
PHP Fatal error:  Allowed memory size of 67108864 bytes exhausted (tried to
allocate 72 bytes) in /usr/share/php/PEAR/PackageFile/v2.php on line 1331

I need to change a parameter in php.ini?

Thank you very much!
   Michael