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Migrating from PHP 7.0.x to PHP 7.1.x

Appendix Edit on GitHub ✎

This new minor version brings with it a number of new features and a few incompatibilities that should be tested for before switching PHP versions in production environments.

Seealso 7.0.x.

New-features New-functions Constants Incompatible Deprecated Changed-functions Other-changes Windows-support

In this section

Backward incompatible changes

Previously, a warning would be emitted for invoking user-defined functions with too few ar...

Changed functions

getopt has an optional third parameter that exposes the index of the next element in the a...

Deprecated features in PHP 7.1.x

The mcrypt extension has been abandonware for nearly a decade now, and was also fairly com...

New features

Type declarations for parameters and return values can now be marked as nullable by prefix...

New functions

sapi_windows_cp_get

New global constants

PHP_FD_SETSIZE

Other changes

New E_WARNING and E_NOTICE errors have been introduced when invalid strings are coerced us...

Windows Support

If a web application is UTF-8 conform, no further action is required. For applications dep...

Source: appendices/migration71.xml · from the official PHP manual (php/doc-en)