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PHP 7 Programming Cookbook by Doug Bierer

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Creating a PHP 5 to PHP 7 code converter

For the most part, PHP 5.x code can run unchanged on PHP 7. There are a few changes, however, that are classified as backwards incompatible. What this means is that if your PHP 5 code is written in a certain way, or uses functions that have been removed, your code will break, and you'll have a nasty error on your hands.

Getting ready

The PHP 5 to PHP 7 Code Converter does two things:

  • Scans your code file and converts PHP 5 functionality that has been removed to its equivalent in PHP 7
  • Adds comments with // WARNING where changes in language usage have occurred, but where a re-write is not possible

    Note

    Please note that after running the converter, your code is not guaranteed to work in PHP 7. You will still have ...

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