PHP Manual
Appendices
Migrating from PHP 5.6.x to PHP 7.0.x
Backward incompatible changes
New features
Deprecated features in PHP 7.0.x
Changed functions
New functions
New Classes and Interfaces
New Global Constants
Changes in SAPI Modules
Removed Extensions and SAPIs
Other Changes
New functions
New Global Constants
Migrating from PHP 5.6.x to PHP 7.0.x
PHP Manual
New Classes and Interfaces
Intl
IntlChar
Reflection
ReflectionGenerator
ReflectionType
Session Handling
SessionUpdateTimestampHandlerInterface
Exception Hierarchy
Throwable
Error
TypeError
ParseError
AssertionError
ArithmeticError
DivisionByZeroError