"array" 和 "callable" 别名
在 class_alias() 中，不再允许使用 "array" 和 "callable" 作为类的别名名称
之前，对不可比较的对象（例如枚举、CurlHandle 和其他内部类）进行宽松布尔比较时存在不一致性。如果与布尔字面量
$object == true 进行比较，则其行为与 (bool)$object 相同；如果与静态未知值 $object == $true
进行比较，则始终返回 false。此行为现已统一，始终遵循 (bool)$object 的行为。
gc_collect_cycles() 的返回值不再包括通过循环间接收集的字符串和资源。
It is now allowed to substitute static with self or the concrete class name in final subclasses.
The tick handlers are now deactivated after all shutdown functions, destructors have run and the output handlers have been cleaned up.
Traits are now bound before the parent class. This is a subtle behavioral change, but should more closely match user expectations.
Errors emitted during compilation and class linking are now always delayed and handled after compilation or class linking. Fatal errors emitted during compilation or class linking cause any delayed errors to be handled immediately, without calling user-defined error handlers.
Exceptions thrown by user-defined error handlers when handling class linking errors are not promoted to fatal errors anymore and do not prevent linking.
Applying #[\Attribute] to an abstract class, enum, interface, or trait
triggers an error during compilation. Previously, the attribute could be
added, but when ReflectionAttribute::newInstance()
was called an error would be thrown.
The error can be delayed from compilation to runtime using the new
#[\DelayedTargetValidation] attribute.
The disable_classes INI setting has been removed as it causes various engine assumptions to be broken.
bzcompress() now throws a ValueError
when $block_size is not between 1 and 9.
bzcompress() now throws a ValueError
when $work_factor is not between 0 and 250.
Cloning a DOMNamedNodeMap, DOMNodeList, Dom\NamedNodeMap, Dom\NodeList, Dom\HTMLCollection, and Dom\DtdNamedNodeMap now fails. This never actually resulted in a working object, therefore no impact is expected.
finfo_file() and finfo::file()
now throws a ValueError instead of a
TypeError when $filename
contains nul bytes.
This aligns the type of Error thrown to be consistent with the rest of
the language.
The extension now requires at least ICU 57.1.
IntlDateFormatter::setTimeZone()/datefmt_set_timezone() now throws an IntlException on uninitialised classes/clone failures.
All Locale methods now throw a ValueError when the locale argument contain null bytes.
The behaviour of Collator::SORT_REGULAR with respect to
handling numeric strings is now aligned with the behaviour of
SORT_REGULAR in ext/standard.
ldap_get_option() and ldap_set_option() now throw a ValueError when passing an invalid option.
Unicode data tables have been updated to Unicode 17.0
Calling the mysqli constructor on an already-constructed object is now no longer possible and throws an Error.
ODBC now assumes that at least ODBC 3.5 functionality is available. The ODBCVER definition and build system flags to control it have been removed.
ODBC no longer has build flags to build against specific drivers (except for DB2) and removes special cases for those drivers. It is strongly recommended to use a driver manager like iODBC or unixODBC on non-Windows.
The Opcache extension is now always built into the PHP binary and is always loaded. The INI directives opcache.enable and opcache.enable_cli are still honored.
The --enable-opcache/--disable-opcache configure flags have been removed, and the build does not produce opcache.so or php_opcache.dll objects anymore.
Using zend_extension=opcache.so or
zend_extension=php_opcache.dll INI directives
will emit a warning.
pcntl_exec() now throws ValueError
when entries of the $args parameter contain null bytes.
pcntl_exec() now throws ValueError
when entries or keys of the $env_vars parameter
contain null bytes.
The extension is compiled without semi-deprecated PCRE2_EXTRA_ALLOW_LOOKAROUND_BSK compile option.
The constructor arguments set in conjunction with
PDO::FETCH_CLASS now follow the usual CUFA
(call_user_func_array()) semantics.
This means string keys will act like a named argument.
Moreover, automatic wrapping for by-value arguments passed to a by-ref
parameter has been removed, and the usual E_WARNING
about this is now emitted.
To pass a variable by-ref to a constructor argument use the general
array value reference assignment: $ctor_args = [&$valByRef]
Attempting to call PDOStatement::setFetchMode() during a call to PDO::fetch(), PDO::fetchObject(), PDO::fetchAll(), for example using tricks such as passing the statement object as a constructor argument when fetching into an object, will now throw an Error.
The value of the constants PDO::FETCH_GROUP,
PDO::FETCH_UNIQUE,
PDO::FETCH_CLASSTYPE,
PDO::FETCH_PROPS_LATE, and
PDO::FETCH_SERIALIZE have changed.
A ValueError is now thrown if
PDO::FETCH_PROPS_LATE is used with a fetch mode
different than PDO::FETCH_CLASS, consistent with
other fetch flags.
A ValueError is now thrown if
PDO::FETCH_INTO is used as a fetch mode in
PDO::fetchAll(),
similar to PDO::FETCH_LAZY.
A ValueError is now thrown when trying to set a cursor name that is too long on a PDOStatement resulting from the Firebird driver.
SQLite PDO::quote() will now throw an exception or emit a warning, depending on the error mode, if the string contains a null byte.
PDO::sqliteCreateCollation() will now throw an exception if the callback has the wrong return type, making it more in line with Pdo\Sqlite::createCollation() behavior.
posix_kill() now throws a ValueError when the process_id argument is lower or greater than what the platform supports (signed integer or long range), posix_setpgid() now throws a ValueError when the process_id or the process_group_id is lower than zero or greater than what the platform supports.
posix_setrlimit() now throws a ValueError when the hard_limit or soft_limit arguments are lower than -1 or if soft_limit is greater than hard_limit.
ReflectionAttribute::newInstance() can now throw errors for internal attributes if the attribute was applied on an invalid target and the error was delayed from compile time to runtime via the #[\DelayedTargetValidation] attribute.
Attempting to write session data where $_SESSION has a key
containing the pipe character (|) will now emit a warning
instead of silently failing.
session_start() is stricter in regard to the options argument. It now throws a ValueError if the array is not a hashmap, or a TypeError if the read_and_close value is not a valid type compatible with int.
Passing an XPath expression that returns something other than a node set
to SimpleXMLElement::xpath() will now emit a warning
and return false, instead of silently failing and returning an empty array.
snmpget(), snmpset(), snmp2_get(), snmp2_set(), snmp3_get(), snmp3_set() and SNMP::__construct() now throw a ValueError when the hostname is too large, contains any null byte or if the port is given when negative or greater than 65535, timeout and retries values are lower than -1 or too large.
SoapClient::__doRequest() now accepts a new,
optional $uriParserClass parameter accepting
string or null arguments.
null represents the original (parse_url()) based
method, while the new backends will be used when passing either
Uri\Rfc3986\Uri or Uri\WhatWg\Url.
socket_create_listen(), socket_bind() and socket_sendto() now throw a ValueError if the port is lower than 0 or greater than 65535, and also if any of the hints array entries are indexed numerically.
socket_addrinfo_lookup() now throws a TypeError if any of the hints values cannot be cast to int and can throw a ValueError if any of these values overflow.
socket_set_option() with
MCAST_LEAVE_GROUP/MCAST_LEAVE_SOURCE_GROUP
options now throw an exception if the value isn't a valid object or array.
socket_set_option() with multicast context now throws a
ValueError when the created socket is not of
AF_INET/AF_INET6 family.
ArrayObject no longer accepts enums, as modifying the $name or $value properties can break engine assumptions.
SplFileObject::fwrite()'s parameter
$length is now nullable.
The default value changed from 0 to null.
Using a printf-family function with a formatter that did not specify the precision previously incorrectly reset the precision instead of treating it as a precision of 0.
tidy::__construct(), tidy::parseFile(), tidy::parseString() now throws a ValueError if the configuration contains an invalid value or attempts to set a read-only internal entry, and a TypeError if a configuration key is not a string.