====== Check PHP Version ======
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To see what the PHP version you have installed (and what is available) then use:
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    sudo apt-cache policy php5
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You can install the latest PHP with the following command:
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    sudo apt-get -y install php5 libapache2-mod-php5
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To make Apache recognize the updated version you will need to restart Apache:
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    sudo service apache2 restart
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