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…
How to Convert Date or Time to any Timezone and Dateformat with PHP
Date manipulation is a common and extremely useful development task. It was never easy with PHP, until PHP5 and DateTime class. There are many cases you need to convert dates.…
Check if a String represents a Valid Timezone with PHP
Sometimes you want to check if a string represents a valid timezone. Using PHP versions greater than 5.2, timezone_identifiers_list() could be a solution. Take a look in the following function:…
What is the JavaScript Equivalent of print_r in PHP?
What is the JavaScript Equivalent of PHP print_r() function? In other words, how you can "print" a javascript object in a way that's readable by humans? Code You could use…