PHP 8.0.1

What's new in this version:

Core:
- Fixed bug #80345 (PHPIZE configuration has outdated PHP_RELEASE_VERSION)
- Fixed bug #72964 (White space not unfolded for CC/Bcc headers)
- Fixed bug #80391 (Iterable not covariant to mixed)
- Fixed bug #80393 (Build of PHP extension fails due to configuration gap with libtool)
- Fixed bug #77069 (stream filter loses final block of data)

Fileinfo:
- Fixed bug #77961 (finfo_open crafted magic parsing SIGABRT)

FPM:
- Fixed bug #69625 (FPM returns 200 status on request without SCRIPT_FILENAME env)

IMAP:
- Fixed bug #80438 (imap_msgno() incorrectly warns and return false on valid UIDs in PHP 8)
- Fix a regression with valid UIDs in imap_savebody()
- Make warnings for invalid message numbers/UIDs between functions consistent

Intl:
- Fixed bug #80425 (MessageFormatAdapter::getArgTypeList redefined)

Opcache:
- Fixed bug #80404 (Incorrect range inference result when division results in float)
- Fixed bug #80377 (Opcache misses executor_globals)
- Fixed bug #80433 (Unable to disable the use of the AVX command when using JIT)
- Fixed bug #80447 (Strange out of memory error when running with JIT)
- Fixed bug #80480 (Segmentation fault with JIT enabled)
- Fixed bug #80506 (Immediate SIGSEGV upon ini_set("opcache.jit_debug", 1))

OpenSSL:
- Fixed bug #80368 (OpenSSL extension fails to build against LibreSSL due to lack of OCB support)

PDO MySQL:
- Fixed bug #80458 (PDOStatement::fetchAll() throws for upsert queries)
- Fixed bug #63185 (nextRowset() ignores MySQL errors with native prepared statements)
- Fixed bug #78152 (PDO::exec() - Bad error handling with multiple commands)
- Fixed bug #66878 (Multiple rowsets not returned unless PDO statement object is unset())
- Fixed bug #70066 (Unexpected "Cannot execute queries while other unbuffered queries")
- Fixed bug #71145 (Multiple statements in init command triggers unbuffered query error)
- Fixed bug #76815 (PDOStatement cannot be GCed/closeCursor-ed when a PROCEDURE resultset SIGNAL)
- Fixed bug #79872 (Can't execute query with pending result sets)
- Fixed bug #79131 (PDO does not throw an exception when parameter values are missing)
- Fixed bug #72368 (PdoStatement->execute() fails but does not throw an exception)
- Fixed bug #62889 (LOAD DATA INFILE broken)
- Fixed bug #67004 (Executing PDOStatement::fetch() more than once prevents releasing resultset)
- Fixed bug #79132 (PDO re-uses parameter values from earlier calls to execute())

Phar:
- Fixed bug #73809 (Phar Zip parse crash - mmap fail)
- Fixed bug #75102 (`PharData` says invalid checksum for valid tar)
- Fixed bug #77322 (PharData::addEmptyDir('/') Possible integer overflow)

Phpdbg:
- Fixed bug #76813 (Access violation near NULL on source operand)

SPL:
- Fixed bug #62004 (SplFileObject: fgets after seek returns wrong line)

Standard:
- Fixed bug #80366 (Return Value of zend_fstat() not Checked)
- Fixed bug #77423 (FILTER_VALIDATE_URL accepts URLs with invalid userinfo)

Tidy:
- Fixed bug #77594 (ob_tidyhandler is never reset)

Tokenizer:
- Fixed bug #80462 (Nullsafe operator tokenize with TOKEN_PARSE flag fails)

XML:
- XmlParser opaque object renamed to XMLParser for consistency with other XML objects

Zlib:
- Fixed bug #48725 (Support for flushing in zlib stream)