How does one install the latest PHP version in ubuntu 12.04?

1. Install the signing key for the PPA (which also adds the sources to apt ):

Add-apt-repository ppa: ondrej/php5If the above command is not available, install it using:

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Apt-get install python-software-properties

2. Now update the package database and then upgrade the system. As part of upgrading, PHP 5.4 will be installed automatically:

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Apt-get update Apt-get upgrade Apt-get dist-upgrade

# Php-v // will show you the latest php version.