A function to change an email address or URL into a clickable HTML hyperlink using eregi_replace.

With this function you can calculate the age of a person

In this tutorial I will explain how to create a progress bar for PHP file uploads. There is no method built into PHP for returning the status of an upload in progress, so this requires a module called the Alternative PHP Cache (APC). This allows you to store data across sessions and includes built-in functionality for storing/returning file upload stats.

Most sites include a number of CSS and JavaScript files. Whilst developing it's usually easier to manage them as separate files but on a live site it makes sense to merge files to reduce the number of HTTP requests the browser has to make. For JavaScript this is particularly important as browsers block rendering whilst downloading.

To submit a form using POST method through PHP, just add the data to be posted as header. This essentially saves one extra html page sent to the browser when user has to be redirected. Mostly found this technique useful for redirecting to payment gateways.

$search = preg_replace("/[^(w)|(x7F-xFF)|(s)]/", " ", $search);

PHP regular expressions examples

Building A PHP-Based Mail Client

sprintf(_("%.2fMB"), $info->Size / (1024 * 1024));