PHP 7.0.0 Beta 1发布了，此版本加入了全新的Zend引擎，大幅提升了性能（据称比5.4速度提升一倍），移除了旧的和不支持的SAPIs和扩展等等一些新特性。以下是更新列表和下载地址。
PHP 7.0.0 comes with new version of the Zend Engine with features such as (incomplete list):
Improved performance: PHP 7 is up to twice as fast as PHP 5.6
Consistent 64-bit support
Many fatal errors are now Exceptions
Removal of old and unsupported SAPIs and extensions
The null coalescing operator (??)
Combined comparison Operator (<=>)
Return Type Declarations
Scalar Type Declarations
Anonymous Classes
For more information on the new features and other changes, you can read the NEWS file, or the UPGRADING filefor a complete list of upgrading notes. These files can also be found in the release archive.
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