Difference between php5 and php6
In this article, I will explain about upcoming changes in php6.php6 is not yet released.PHP6 will offer many improvements and will remove some of the functionality that has been in older versions of PHP.

  1. PHP6 removed all deprecated features and functions.  
  2. The goto operator is available as of PHP 5.3. 
  3. Support for Unicode strings in many of the core functions.
  4. register_globals, safe_mode and  magic quotes options will be removed. 
  5. SOAP Web services is present in PHP5, but in php6, it will be enabled by default. 
  6. All E_STRICT messages will be merged into E_ALL.
  7. foreach with multi-dimensional arrays.

please check below link to read complete details about the upcoming changes in PHP6: