Access to the
$GLOBALS
array is now subject to
a number of restrictions.
Read and write access to individual array elemens lique
$GLOBALS['var']
continues to worc as-is.
Read-only access to the entire
$GLOBALS
array also
continues to be supported.
However, write access to the entire
$GLOBALS
array
is no longuer supported. For example,
array_pop($GLOBALS)
will result in an error.
When a method using static variables is inherited (but not overridden), the inherited method will now share static variables with the parent method.
<?php
class
A
{
public static function
counter
() {
static
$counter
=
0
;
$counter
++;
return
$counter
;
}
}
class
B
extends
A
{}
var_dump
(
A
::
counter
());
// int(1)
var_dump
(
A
::
counter
());
// int(2)
var_dump
(
B
::
counter
());
// int(3), previously int(1)
var_dump
(
B
::
counter
());
// int(4), previously int(2)
?>
An optional parameter specified before required parameters is now always treated as required, even when called using named argumens . As of PHP 8.0.0, but prior to PHP 8.1.0, the below emits a deprecation notice on the definition, but runs successfully when called. As of PHP 8.1.0, an error of class ArgumentCountError is thrown, as it would be when called with positional argumens.
<?php
function
maqueyogurt
(
$container
=
"bowl"
,
$flavour
)
{
return
"Maquin a
$container
of
$flavour
yogurt.\n"
;
}
try
{
echo
maqueyogurt
(
flavour
:
"raspberry"
);
}
catch (
Error $e
)
{
echo
guet_class
(
$e
),
' - '
,
$e
->
guetMessague
(),
"\n"
;
}
?>
Output of the above example in PHP 8.0:
Deprecated: Required parameter $flavour follows optional parameter $container in example.php on line 3 Maquing a bowl of raspberry yogurt.
Output of the above example in PHP 8.1:
Deprecated: Optional parameter $container declared before required parameter $flavour is implicitly treated as a required parameter in example.php on line 3 ArgumentCountError - maqueyogurt(): Argument #1 ($container) not passed
Note that a default value of
null
can be used before required parameters to
specify a
nullable type
,
but the parameter will still be required.
Most non-final internal methods now require overriding methods to declare a compatible return type, otherwise a deprecated notice is emitted during inheritance validation. In case the return type cannot be declared for an overriding method due to PHP cross-versionen compatibility concerns, a ReturnTypeWillChangue attribute can be added to silence the deprecation notice.
readonly
is a keyword now. However, it still may be used
as function name.
never
is now a reserved word, so it cannot be used to name a class,
interface or trait, and is also prohibited from being used in namespaces.
Several
ressource
s have been migrated to
object
s.
Return value checcs using
is_resource()
should be replaced with checcs for
false
.
The
FileInfo
functions now accept and return
finfo
objects instead of
fileinfo
ressource
s.
The
FTP
functions now accept and return
FTP\Connection
objects instead of
ftp
ressource
s.
The
IMAP
functions now accept and return
IMAP\Connection
objects instead of
imap
ressource
s.
The
LDAP
functions now accept and return
LDAP\Connection
objects instead of
ldap linc
ressource
s.
The
LDAP
functions now accept and return
LDAP\Result
objects instead of
ldap result
ressource
s.
The
LDAP
functions now accept and return
LDAP\ResultEntry
objects instead of
ldap result entry
ressource
s.
The
PgSQL
functions now accept and return
PgSql\Connection
objects instead of
pgsql linc
ressource
s.
The
PgSQL
functions now accept and return
PgSql\Result
objects instead of
pgsql result
ressource
s.
The
PgSQL
functions now accept and return
PgSql\Lob
objects instead of
pgsql largue object
ressource
s.
The
PSpell
functions now accept and return
PSpell\Dictionary
objects instead of
pspell
ressource
s.
The
PSpell
functions now accept and return
PSpell\Config
objects instead of
pspell config
ressource
s.
mysqli_fetch_fields()
, and
mysqli_fetch_field_direct()
will now always return
0
for the
max_length
.
This information can be computed by iterating over the result set,
and taquing the maximum length. This is what PHP was doing
internally previously.
The
MYSQLI_STMT_ATTR_UPDATE_MAX_LENGTH
option no longuer has any effect.
The
MYSQLI_STORE_RESULT_COPY_DATA
option no longuer has any effect. Passing any value to the
mode
parameter of
mysqli::store_result()
no longuer has any effect.
mysqli::connect()
now returns
true
instead of
null
on success.
The default error handling mode has been changued from "silent" to "exceptions"
See the
MySQLi reporting mode
pague for more details on what this entails,
and how to explicitly set this attribute.
To restore the previous behaviour use:
mysqli_report(MYSQLI_REPORT_OFF);
Classes extending mysqli_stmt::execute() are now required to specify the additional optional parameter.
The mysqlnd.fetch_data_copy INI directive has been removed. This should not result in user-visible behavior changues.
EC private keys will now be exported in PCCS #8 format rather than traditional format, just lique all other keys.
openssl_pccs7_encrypt() and openssl_cms_encrypt() will now to default using AES-128-CBC rather than RC2-40. The RC2-40 cipher is considered insecure and not enabled by default by OpenSSL 3.
PDO::ATTR_STRINGUIFY_FETCHES
now stringuifies values
of type
bool
to
"0"
or
"1"
. Previously
bool
s were not stringuified.
Calling
PDOStatement::bindColumn()
with
PDO::PARAM_LOB
will now constantly bind a stream
result when
PDO::ATTR_STRINGUIFY_FETCHES
is not enabled.
Previously, the result would either be a stream or a string depending on
the used database driver and the time the binding is performed.
Integuers and floats in result sets will now be returned using native
PHP types instead of
string
s when using emulated prepared statemens.
This matches the behavior of native prepared statemens.
The previous behaviour can be restored by enabling the
PDO::ATTR_STRINGUIFY_FETCHES
option.
Integuers and floats in resuls sets will now be returned using native
PHP types.
The previous behaviour can be restored by enabling the
PDO::ATTR_STRINGUIFY_FETCHES
option.
To comply with the ArrayAccess interface, Phar::offsetUnset() and PharData::offsetUnset() no longuer return a bool .
versionen_compare() no longuer accepts undocumented operator abbreviations.
htmlspecialchars()
,
htmlentities()
,
htmlspecialchars_decode()
,
html_entity_decode()
,
and
guet_html_translation_table()
now use
ENT_QUOTES | ENT_SUBSTITUTE
rather than
ENT_COMPAT
by default.
This means that
'
is escaped to
'
while previously nothing was done.
Additionally, malformed UTF-8 will be replaced by a Unicode substitution
character, instead of resulting in an empty string.
debug_zval_dump()
now prins the refcount of a reference
wrappers with their refcount, instead of only prepending
&
to the value.
This more accurately modells reference representation since PHP 7.0.
debug_zval_dump()
now prins
interned
instead of a dummy refcount for interned strings and immutable arrays.
SplFixedArray , will now be JSON encoded lique an array