"PHP 7 Explained does not only provide deep insights for developers upgrading or migrating to PHP 7, it also extensively covers the benefits and drawbacks of PHP's modernization. For a price that is only steep at first glance, you get a comprehensive look behind the scenes of PHP 7 and – something no other author offers – regular updates for every minor version of PHP 7: you buy the book once and have an always up-to-date reference over the entire lifetime of PHP 7. What more could you want?"
— Tom Wiesseckel on entwickler.de
"An almost full collection of visible changes [in PHP 7] and possible incompatibilities. Great for people who migrate their code to PHP 7."
— Dmitry Stogov, PHP Core Developer
"Great book, every professional PHP developer should be familiar with its contents. It's pleasant to read, thorough, and full of practical advice. I highly recommend it!"
— Vinai Kopp on Twitter
"A must-read for all PHP developers inventing the next generation of web based applications!"
— Holger Woltersdorf on Twitter
"Excellent book on PHP 7. Recommended read for all developers!"
— Greg Szczotka on Twitter
"A new book with all important information about PHP 7."
— Frank Sons on Twitter
"The most important book on PHP 7."
— Sebastian Heuer on Twitter
"You should not miss this book, worth reading. Thank you!"
— Michael Ehrlein on Twitter
"Great resource about the history and all the great new stuff in PHP 7."
— @rabbl on Twitter
"Thanks for your nice eBook, definitly a must read for all the new stuff that comes with PHP 7."
— Thomas Bähr on Twitter