摘要： 本文讲的是Upgrading to PHP 7 – Mini eBook by O’Reilly， A couple of days ago, O’Reilly published a freemini eBook fromDavey Shafikabout Upgrading to PHP 7 . This eBook has ar
A couple of days ago, O’Reilly published a freemini eBook fromDavey Shafikabout Upgrading to PHP 7 . This eBook has around 80 pages and is available in ePub, Mobi, and PDF at this link .
“Upgrading to PHP 7” book review:
PHP 7—the most dramatic update to the language in over a decade—has arrived. This O’Reilly report provides you with a short guide to the major changes in this new release, including a revamped engine (Zend Engine 3), a bunch of new features, and lots of language cleanup. You’ll learn about basic language changes, deprecated features, Unicode enhancements, changes in Object-Oriented programming, and other enhancements.
You’ll also discover why it’s taken more than 10 years for the first new major version of PHP since PHP 5 to appear—and what happened to version 6 in the meantime.
Get important details regarding changes to PHP 7, including:
– Deprecated features, starting with alternative PHP tags and POSIX-compatible regular expressions
– Uniform Variable Syntax, including consistency fixes and new syntax
– Basic language changes, such as new operators, constant arrays, new functions, and regular expressions
– Expectations and Assertions
– Error handling
– Enhancements to PHP’s Unicode, closure, and Generator features
– Changes in Object-Oriented programming
– Scalar type hints (perhaps the most polarizing and exciting new feature)
– Made by the author in is blog .
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