07 Jul 2018, PHP 7.1.20RC1

- Core:
. Fixed bug #76534 (PHP hangs on 'illegal string offset on string references
with an error handler). (Laruence)
. Fixed bug #76502 (Chain of mixed exceptions and errors does not serialize
properly). (Nikita)

- Date:
. Fixed bug #76462 (Undefined property: DateInterval::$f). (Anatol)

- FPM:
. Fixed bug #73342 (Vulnerability in php-fpm by changing stdin to
non-blocking). (Nikita)

- GMP:
. Fixed bug #74670 (Integer Underflow when unserializing GMP and possible
other classes). (Nikita)

- intl:
. Fixed bug #76556 (get_debug_info handler for BreakIterator shows wrong
type). (cmb)

- mbstring:
. Fixed bug #76532 (Integer overflow and excessive memory usage
in mb_strimwidth). (MarcusSchwarz)

- PGSQL:
. Fixed bug #76548 (pg_fetch_result did not fetch the next row). (Anatol)

- phpdbg:
. Fix arginfo wrt. optional/required parameters. (cmb)

- Reflection:
. Fixed bug #76536 (PHP crashes with core dump when throwing exception in
error handler). (Laruence)
. Fixed bug #75231 (ReflectionProperty#getValue() incorrectly works with
inherited classes). (Nikita)

- Standard:
. Fixed bug #76505 (array_merge_recursive() is duplicating sub-array keys).
(Laruence)
. Fixed bug #71848 (getimagesize with $imageinfo returns false). (cmb)