FFI

FFI::load is now allowed during preloading when opcache.preload_user is the current system user. Previously, calling FFI::load was not possible during preloading if the opcache.preload_user directive was set.

FPM

FPM CLI test now fails if the socket path is longer than supported by the OS.

Opcache

In the CLI and phpdbg SAPIs, preloading does not require the opcache.preload_user directive to be set anymore when running as root. In other SAPIs, this directive is required when running as root because preloading is done before the SAPI switches to an unprivileged user.

Streams

Blocking fread on a socket connection returns immediately if there are any buffered data instead of waiting for more data.

A memory stream no longer fails if the seek offset is past the end. Instead, the memory will be increased on the next write and the data between the old end and the offset is filled with zero bytes, similar to how files work.

stat access operations like file_exists and similar will now use real path instead of the actual stream path. This is consistent with stream opening.

CLI

The STDOUT, STDERR and STDIN streams are no longer closed on resource destruction which is mostly when the CLI finishes. It is however still possible to explicitly close those streams using fclose and similar.

Core

gc_status has added the following 8 fields:

• "running" => bool
• "protected" => bool
• "full" => bool
• "buffer_size" => int
• "application_time" => float: Total application time, in seconds (including collector_time)
• "collector_time" => float: Time spent collecting cycles, in seconds (including destructor_time and free_time)
• "destructor_time" => float: Time spent executing destructors during cycle collection, in seconds
• "free_time" => float: Time spent freeing values during cycle collection, in seconds

class_alias now supports creating an alias of an internal class.

Setting open_basedir at runtime using ini_set('open_basedir', ...); no longer accepts paths containing the parent directory (..). Previously, only paths starting with .. were disallowed. This could easily be circumvented by prepending ./ to the path.

User exception handlers now catch exceptions during shutdown.

The resultant HTML of highlight_string and highlight_file has changed. Whitespace between outer HTML tags is removed. Newlines and spaces are no longer converted to HTML entities. The whole HTML is now wrapped in a <pre> tag. The outer <span> tag has been merged with the <code> tag.

Calendar

easter_date now supports years from 1970 to 2,000,000,000 on 64-bit systems, previously it only supported years in the range from 1970 to 2037.

Curl

curl_getinfo now supports two new constants: CURLINFO_CAPATH and CURLINFO_CAINFO. If option is null, the following two additional keys are present: "capath" and "cainfo".

DOM

Changed DOMCharacterData::appendData tentative return type to true.

DOMDocument::loadHTML, DOMDocument::loadHTMLFile, and DOMDocument::loadXML now have a tentative return type of bool. Previously, this was documented as having a return type of DOMDocument|bool, but, as of PHP 8.0.0, DOMDocument cannot be returned as it is no longer statically callable.

Gd

The signature of imagerotate has changed. The $ignore_transparent parameter has been removed, as it was ignored since PHP 5.5.0.

Intl

datefmt_set_timezone (and its alias IntlDateformatter::setTimeZone) now returns true on success, previously null was returned.

IntlBreakiterator::setText now returns false on failure, previously null was returned. It now returns true on success, previously null was returned.

IntlChar::enumCharNames is now returning a boolean. Previously it returned null on success and false on failure.

IntlDateFormatter::__construct throws an U_ILLEGAL_ARGUMENT_ERROR exception when an invalid locale had been set.

MBString

mb_strtolower and mb_convert_case implement conditional casing rules for the Greek letter sigma. For mb_convert_case, conditional casing only applies to MB_CASE_LOWER and MB_CASE_TITLE modes, not to MB_CASE_LOWER_SIMPLE and MB_CASE_TITLE_SIMPLE.

mb_decode_mimeheader interprets underscores in QPrint-encoded MIME encoded words as required by RFC 2047; they are converted to spaces. Underscores must be encoded as "=5F" in such MIME encoded words.

In rare cases, mb_encode_mimeheader will transfer-encode its input string where it would pass it through as raw ASCII in PHP 8.2.

mb_encode_mimeheader no longer drops NUL (zero) bytes when QPrint-encoding the input string. This previously caused strings in certain text encodings, especially UTF-16 and UTF-32, to be corrupted by mb_encode_mimeheader.

mb_detect_encoding's "non-strict" mode now behaves as described in the documentation. Previously, it would return false if the same byte (for example, the first byte) of the input string was invalid in all candidate encodings. More generally, it would eliminate candidate encodings from consideration when an invalid byte was seen, and if the same input byte eliminated all remaining encodings still under consideration, it would return false. On the other hand, if all candidate encodings but one were eliminated from consideration, it would return the last remaining one without regard for how many encoding errors might be encountered later in the string. This is different from the behavior described in the documentation, which says: "If strict is set to false, the closest matching encoding will be returned."

mysqli

mysqli_fetch_object now raises a ValueError instead of an Exception when the $constructor_args argument is non empty with the class not having constructor.

mysqli_poll now raises a ValueError when neither the $read nor the $error arguments are passed.

mysqli_field_seek and mysqli_result::field_seek now specify the return type as true instead of bool.

ODBC

odbc_autocommit now accepts null for the $enable parameter. Passing null has the same behaviour as passing only 1 parameter, namely indicating if the autocommit feature is enabled or not.

PGSQL

pg_fetch_object now raises a ValueError instead of an Exception when the $constructor_args argument is non empty with the class not having constructor.

pg_insert now raises a ValueError instead of a E_WARNING when the table specified is invalid.

pg_insert and pg_convert raises a ValueError or a TypeError instead of a E_WARNING when the value/type of a field does not match properly with a PostgreSQL's type.

The $row parameter of pg_fetch_result, pg_field_prtlen, and pg_field_is_null is now nullable.

Random

Changed mt_srand and srand to not check the number of arguments to determine whether a random seed should be used. Passing null will generate a random seed, 0 will use zero as the seed. The functions are now consistent with Random\Engine\Mt19937::__construct.

Reflection

Return type of ReflectionClass::getStaticProperties is no longer nullable.

Standard

E_NOTICEs emitted by unserialize have been promoted to E_WARNING.

unserialize now emits a new E_WARNING if the input contains unconsumed bytes.

array_pad is now only limited by the maximum number of elements an array can have. Before, it was only possible to add at most 1048576 elements at a time.

strtok raises an E_WARNING in the case token is not provided when starting tokenization.

password_hash will now chain the underlying Random\RandomException as the ValueError's $previous Exception when salt generation fails.

If using an array as the $command for proc_open, it must now have at least one non empty element. Otherwise a ValueError is thrown.

proc_open returns false if $command array is invalid command instead of resource object that produces warning later. This was already the case for Windows but it is now also the case if a posix_spawn implementation is in use (most Linux, BSD and MacOS platforms). There are still some old platforms where this behavior is not changed as posix_spawn is not supported there.

array_sum and array_product now warn when values in the array cannot be converted to int/float. Previously arrays and objects where ignored whilst every other value was cast to int. Moreover, objects that define a numeric cast (e.g. GMP) are now casted instead of ignored.

The $decimals of number_format now properly handles negative integers. Rounding with a negative value for $decimals means that $num is rounded to $decimals significant digits before the decimal point. Previously negative $decimals were silently ignored and the number got rounded to zero decimal places.

A new $before_needle argument has been added to strrchr. It behaves like its counterpart in the strstr or stristr functions.

str_getcsv and fgetcsv now return an empty string instead of a string with a single null byte for the last field which only contains an unterminated enclosure.

Core

Using the increment/decrement operators (++/--) on values of type bool now emit warnings. This is because it currently has no effect, but will behave like $bool += 1 in the future.

Using the decrement operator (--) on values of type null now emit warnings. This is because it currently has no effect, but will behave like $null -= 1 in the future.

Internal objects that implement an _IS_NUMBER cast but not a do_operator handler that overrides addition and subtraction now can be incremented and decrement as if one would do $o += 1 or $o -= 1

DOM

The DOM lifetime mechanism has been reworked such that implicitly removed nodes can still be fetched. Previously this resulted in an exception.

SQLite3

The SQLite3 class now throws SQLite3Exception (extends Exception) instead of Exception.

The SQLite error code is now passed in the exception error code instead of being included in the error message.

DOM

Looping over a DOMNodeList now uses caching. Therefore requesting items no longer takes quadratic time by default.

Getting text content from nodes now avoids an allocation, resulting in a performance gain.

DOMChildNode::remove now runs in O(1) performance.

Standard

The file flags error check is now about 7% faster.

SPL

RecursiveDirectoryIterator now performs less I/O when looping over a directory.