Attention in classroom
In Ruby on Rails, created_at and updated_at columns are MySQL timestamp columns. GROUP BY is pretty useless on a timestamp column, unless you are trying to group rows that were added at the same second. I needed to group by just the date, so in order to do this I had to manipulate the …
Continue reading “MySQL group by day, month or year using a timestamp column”
A Globally Recognized Avatar Your Gravatar is an image that follows you from site to site appearing beside your name when you do things like comment or post on a blog. Avatars help identify your posts on blogs and web forums, so why not on any site?
What is Memcached? Free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.
With object orientated languages came the concept of the try-catch block to better manage exceptions and application crashes, and from PHP 5 onwards, the popular web server-side scripting language too adopted this ideology.
Is there any function which replaces params in a string? Something like this:? Code: $format_str = "My name is %name."; /* this was set in a configuration file – config.php */$str = xprintf($format_str, array(\’name\’ => \’Joe\’, \’age\’ => 150)); /* above is somewhere in main code */ The expected value of $str after …
Continue reading “Translate characters or replace substrings”
The Open Graph Protocol enables you to integrate your Web pages into the social graph. It is currently designed for Web pages representing profiles of real-world things