Core:
Fixed bug #80523 (bogus parse error on >4GB source code).
Fixed bug #80384 (filter buffers entire read until file closed).
Fixed bug #80596 (Invalid union type TypeError in anonymous classes).
Fixed bug #80617 (GCC throws warning about type narrowing in ZEND_TYPE_INIT_CODE).
BCMath:
Fixed bug #80545 (bcadd('a', 'a') doesn't throw an exception).
Curl:
Fixed bug #80595 (Resetting POSTFIELDS to empty array breaks request).
Date:
Fixed bug #80376 (last day of the month causes runway cpu usage).
DOM:
Fixed bug #80537 (Wrong parameter type in DOMElement::removeAttributeNode stub).
Filter:
Fixed bug #80584 (0x and 0X are considered valid hex numbers by filter_var()).
GMP:
Fixed bug #80560 (Strings containing only a base prefix return 0 object).
Intl:
Fixed bug #80644 (Missing resource causes subsequent get() calls to fail).
MySQLi:
Fixed bug #67983 (mysqlnd with MYSQLI_OPT_INT_AND_FLOAT_NATIVE fails to interpret bit columns).
Fixed bug #64638 (Fetching resultsets from stored procedure with cursor fails).
Fixed bug #72862 (segfault using prepared statements on stored procedures that use a cursor).
Fixed bug #77935 (Crash in mysqlnd_fetch_stmt_row_cursor when calling an SP with a cursor).
ODBC:
Fixed bug #80592 (all floats are the same in ODBC parameters).
Opcache:
Fixed bug #80422 (php_opcache.dll crashes when using Apache 2.4 with JIT).
PDO_Firebird:
Fixed bug #80521 (Parameters with underscores no longer recognized).
Phar:
Fixed bug #76929 (zip-based phar does not respect phar.require_hash).
Fixed bug #77565 (Incorrect locator detection in ZIP-based phars).
Fixed bug #69279 (Compressed ZIP Phar extractTo() creates garbage files).
Phpdbg:
Reverted fix for bug #76813 (Access violation near NULL on source operand).
SOAP:
Fixed bug #80672 (Null Dereference in SoapClient). (CVE-2021-21702)
Sponsored by: PHP Update Service
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