One of the questions you face in interview on PHP  is  about the key features added in PHP 5.? I have not found any single  page on web which lists the key features introduced in php5. so here is the list.

php 5

The final release of PHP 5 was announced on 13 July 2004.(as per php.net news archives)

Some of the key features of PHP 5 include:

• The Zend Engine II with a new object model and dozens of new features.
• XML support has been completely redone in PHP 5, all extensions are now focused around the excellent libxml2 library (http://www.xmlsoft.org/).
• A new SimpleXML extension for easily accessing and manipulating XML as PHP objects. It can also interface with the DOM extension and vice-versa.
• A brand new built-in SOAP extension for interoperability with Web Services.
• A new MySQL extension named MySQLi for developers using MySQL 4.1 and later. This new extension includes an object-oriented interface in addition to a traditional interface; as well as support for many of MySQL’s new features, such as prepared statements.
• SQLite has been bundled with PHP. For more information on SQLite, please visit their website.
• Streams have been greatly improved, including the ability to access low-level socket operations on streams.

Did I missed anything? or went wrong? if so, please let me know by commenting here.

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