Gmail smarthost with Exim4 on Debian
Setting up your Linux workstation or a virtual machine, there is no public IP or domain available. If you want to send mail from this machine, reverse DNS will fail…
How to Install PostgreSQL 9.3 on Debian 7 Wheezy
While MySQL considered as "The world's most popular open source database", PostgreSQL rightly considered as "the world's most advanced open source database". PostgreSQL architecture is based on CLUSTERS (a group…
How to Create, Read, Update and Delete Cookies with PHP or Javascript
http is a stateless protocol. A way to remember information from page to page is to use cookies. According to Wikipedia: A cookie, also known as an HTTP cookie, web…
Easily Backup Virtualbox disks using Immutable Images
Virtual disks (Virtualbox in our case) are very large files, that may change frequently. This is a big problem for backup. A little change (even a simple boot of virtual…
How to check if a Request is AJAX call with PHP
It is useful to prevent direct access of AJAX calls (from browser address bar). A solution could be the following simple function check_is_ajax(): /** * Check if request is an…
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