PHP (Hypertext Preprocessor) is a general purpose scripting language that quickly became the de facto server-side language of choice for web developers after its initial release in 1995. Today, most of the web sites run PHP due to its popularity as the back-end of content management systems (CMS) like WordPress, Drupal, and Joomla. Whether for a small blog or professional pages, a CMS is usually the quickest, cheapest way to set up an online presence.
You consider PHP if your project involves..
PHP is probably the most popular scripting language on the web. It is used to enchance web pages. With PHP, you can do things like create username and password login pages, check details from a form, create forums, picture galleries, surveys, and a whole lot more.