Follow these steps to install LAMP environnement on debian.

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For apache :  "apt-get install apache2"

To check : open mozilla and go to the url "http://localhost", if you see an apache page it's good

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For mysql : "apt-get install mysql-server mysql-client"

To check :  type "mysql -V" in terminal and you normaly get a message with a version number.

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For php : "apt get-install php5"

To check : type "php -v" in terminal and you normaly get a message with a version number.

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For phpmyadmin  : "apt-get install phpmyadmin"

To check : open mozilla and go to the url "http://localhost/phpmyadmin", if you see a page with phpmyadmin it's good

Feel free to like this video if you succeed, thanks ;)