CLI:
    Fixed bug #77794 (Incorrect Date header format in built-in server).
EXIF:
    Fixed bug #77950 (Heap-buffer-overflow in _estrndup via exif_process_IFD_TAG).
Interbase:
    Fixed bug #72175 (Impossibility of creating multiple connections to Interbase with php 7.x).
Intl:
    Fixed bug #77895 (IntlDateFormatter::create fails in strict mode if $locale = null).
litespeed:
    LiteSpeed SAPI 7.3.1, better process management, new API function litespeed_finish_request().
Mail:
    Fixed bug #77821 (Potential heap corruption in TSendMail()).
PCRE:
    Fixed bug #77827 (preg_match does not ignore \r in regex flags).
PDO:
    Fixed bug #77849 (Disable cloning of PDO handle/connection objects).
phpdbg:
    Fixed bug #76801 (too many open files).
    Fixed bug #77800 (phpdbg segfaults on listing some conditional breakpoints).
    Fixed bug #77805 (phpdbg build fails when readline is shared).
Reflection:
    Fixed bug #77772 (ReflectionClass::getMethods(null) doesn't work).
    Fixed bug #77882 (Different behavior: always calls destructor).
Standard:
    Fixed bug #77680 (recursive mkdir on ftp stream wrapper is incorrect).
    Fixed bug #77844 (Crash due to null pointer in parse_ini_string with INI_SCANNER_TYPED).
    Fixed bug #77853 (Inconsistent substr_compare behaviour with empty haystack).