The following ini Directives have been added to customize logging, if
error_log is set to
ascii. Starting with PHP 7.3.8,
rawis also available, restoring the way syslog behaved in previous PHP versions. This filter will also affect calls to syslog().
The cyclic GC has been enhanced, which may result in considerable performance improvements.
var_export() now exports stdClass
objects as an array cast to an object (
(object) array( ... )), rather
than using the nonexistent method stdClass::__setState().
The unused constants
PHPDBG_FUNC have been removed.
The getallheaders() function is now also available.
libcurl ≥ 7.15.5 is now required.
FILTER_VALIDATE_FLOAT now also supports a
option, which defines the set of allowed thousand separator chars. The default
"',.") is fully backward compatible with former PHP versions.
FILTER_SANITIZE_ADD_SLASHES has been added as an alias of the
magic_quotes filter (
magic_quotes filter is subject to removal in future versions of PHP.
The default transfer mode has been changed to
Normalizer::NONE is deprecated, when PHP is linked with
ICU ≥ 56.
Normalizer::normalize() argument for
NFKC_Casefold normalization; available when linked with
ICU ≥ 56.
A new flag has been added,
can be used with json_decode() or
json_encode() and causes these functions to throw the new
JsonException upon an error, instead of setting the
global error state that is retrieved with
json_last_error() and json_last_error_msg().
JSON_PARTIAL_OUTPUT_ON_ERROR takes precedence over
The configuration option --with-libmbfl is no longer available.
birdstep.max_links ini directive has been
opcache.inherited_hack ini directive has been removed.
The value has already been ignored since PHP 5.3.0.
ssl stream options as well as related constants for possible TLS protocol values
have been added.
The PCRE extension has been upgraded to PCRE2, which may cause minor behavioral changes (for instance, character ranges in classes are now more strictly interpreted), and augments the existing regular expression syntax.
preg_quote() now also escapes the
PDO::DBLIB_ATTR_SKIP_EMPTY_ROWSETS to enable automatic
skipping of empty rowsets has been added.
PDO::DBLIB_ATTR_TDS_VERSION attribute which exposes
the TDS version has been added.
DATETIME2 columns are now treated like DATETIME columns.
SQLite3 databases can now be opened in read-only mode by setting the
PDO::SQLITE_ATTR_OPEN_FLAGS attribute to
session_set_cookie_params() now also supports the following signature:
$optionsis an associative array which may have any of the keys
"samesite". Accordingly, the return value of session_get_cookie_params() now also has an element with the key
"samesite". Furthermore, the new
session.cookie_samesiteini option to set the default of the SameSite directive for cookies has been added. It defaults to
""(empty string), so no SameSite directive is set. Can be set to
"Strict", which sets the respective SameSite directive.
The return value of the xml_set_external_entity_ref_handler() callback is no longer ignored if the extension has been built against libxml. Formerly, the return value has been ignored, and parsing did never stop.
Building against the bundled libzip is discouraged, but still possible by adding --without-libzip to the configuration.
The zlib/level context option for the compress.zlib wrapper to facilitate setting the desired compression level has been added.