PHP 7.3.0 alpha 1 已发布，更新内容如下：
NEWS - Core: . Improved PHP GC. (Dmitry, Nikita) . Redesigned the old ext_skel program written in PHP, run: 'php ext_skel.php' for all options. This means there are no dependencies, thus making it work on Windows out of the box. (Kalle) . Removed support for BeOS. (Kalle) . Add PHP_VERSION to phpinfo() <title/>. (github/MattJeevas) . Add net_get_interfaces(). (Sara, Joe, Anatol) . Implemented flexible heredoc and nowdoc syntax, per RFC https://wiki.php.net/rfc/flexible_heredoc_nowdoc_syntaxes. (Thomas Punt) . Added support for references in list() and array destructuring, per RFC https://wiki.php.net/rfc/list_reference_assignment. (David Walker) . Fixed bug #75683 (Memory leak in zend_register_functions() in ZTS mode). (Dmitry) . Fixed bug #75031 (support append mode in temp/memory streams). (adsr) . Fixed bug #74860 (Uncaught exceptions not being formatted properly when error_log set to "syslog"). (Philip Prindeville) . Fixed bug #75220 (Segfault when calling is_callable on parent). (andrewnester) . Fixed bug #69954 (broken links and unused config items in distributed ini files). (petk) . Fixed bug #74922 (Composed class has fatal error with duplicate, equal const properties). (pmmaga) . Fixed bug #63911 (identical trait methods raise errors during composition). (pmmaga) . Fixed bug #75677 (Clang ignores fastcall calling convention on variadic function). (Li-Wen Hsu) . Fixed bug #54043 (Remove inconsitency of internal exceptions and user defined exceptions). (Nikita) . Fixed bug #53033 (Mathematical operations convert objects to integers). (Nikita) . Fixed bug #73108 (Internal class cast handler uses integer instead of float). (Nikita) . Fixed bug #75765 (Fatal error instead of Error exception when base class is not found). (Timur Ibragimov) . Fixed bug #76198 (Wording: "iterable" is not a scalar type). (Levi Morrison) . Fixed bug #76137 (config.guess/config.sub do not recognize RISC-V). (cmb) - BCMath: . Fixed bug #66364 (BCMath bcmul ignores scale parameter). (cmb) . Implemented request #67855 (No way to get current scale in use). (Chris Wright, cmb) . Fixed bug #75164 (split_bc_num() is pointless). (cmb) . Fixed bug #75169 (BCMath errors/warnings bypass PHP's error handling). (cmb) - cURL: . Fixed bug #74125 (Fixed finding CURL on systems with multiarch support). (cebe) - Date: . Implemented FR #74668: Add DateTime::createFromImmutable() method. (majkl578, Rican7) . Fixed bug #75222 (DateInterval microseconds property always 0). (jhdxr) . Fixed bug #68406 (calling var_dump on a DateTimeZone object modifies it). (jhdxr) . Fixed bug #76131 (mismatch arginfo for date_create). (carusogabriel) - DBA: . Fixed bug #75264 (compiler warnings emitted). (petk) - GD: . Added support for WebP in imagecreatefromstring() (Andreas Treichel, cmb). - GMP: . Export internal structures and accessor helpers for GMP object. (Sara) . Added gmp_binomial(n, k). (Nikita) . Added gmp_lcm(a, b). (Nikita) . Added gmp_perfect_power(a). (Nikita) . Added gmp_kronecker(a, b). (Nikita) - interbase: . Fixed bug #75453 (Incorrect reflection for ibase_[p]connect). (villfa) - intl: . Fixed bug #75317 (UConverter::setDestinationEncoding changes source instead of destination). (andrewnester) - JSON: . Added JSON_THROW_ON_ERROR flag. (Andrea) - LDAP: . Added ldap_exop_refresh helper for EXOP REFRESH operation with dds overlay. (Come) . Added full support for sending and parsing ldap controls (Come) . Fixed bug #49876 (Fix LDAP path lookup on 64-bit distros). (dzuelke) - libxml2: . Fixed bug #75871 (use pkg-config where available). (pmmaga) - litespeed: . Fixed bug #75248 (Binary directory doesn't get created when building only litespeed SAPI). (petk) . Fixed bug #75251 (Missing program prefix and suffix). (petk) - mbstring: . Fixed bug #65544 (mb title case conversion-first word in quotation isn't capitalized). (Nikita) . Fixed bug #71298 (MB_CASE_TITLE misbehaves with curled apostrophe/quote. (Nikita) . Fixed bug #73528 (Crash in zif_mb_send_mail). (Nikita) . Fixed bug #74929 (mbstring functions version 7.1.1 are slow compared to 5.3 on Windows). (Nikita) . Fixed bug #76319 (mb_strtolower with invalid UTF-8 causes segmentation fault). (Nikita) . Updated to Oniguruma 6.8.2. (cmb) - ODBC: . Removed support for ODBCRouter. (Kalle) . Removed support for Birdstep. (Kalle) - OpenSSL: . Added openssl_pkey_derive function. (Jim Zubov) - PCRE: . Implemented https://wiki.php.net/rfc/pcre2-migration (Anatol, Dmitry) . Fixed bug #75355 (preg_quote() does not quote # control character). (Michael Moravec) - PDO_DBlib: . Implemented request #69592 (allow 0-column rowsets to be skipped automatically). (fandrieu) . Fixed bug #74243 (allow locales.conf to drive datetime format). (fandrieu) . Expose TDS version as \PDO::DBLIB_ATTR_TDS_VERSION attribute on \PDO instance. (fandrieu) . Treat DATETIME2 columns like DATETIME. (fandrieu) - PDO_OCI: . Fixed bug #74631 (PDO_PCO with PHP-FPM: OCI environment initialized before PHP-FPM sets it up). (Ingmar Runge) - PDO SQLite . Add support for additional open flags - pgsql: . Added new error constants for pg_result_error(): (Kalle) - Requires Postgres 9.3 - PGSQL_DIAG_SCHEMA_NAME - PGSQL_DIAG_TABLE_NAME - PGSQL_DIAG_COLUMN_NAME - PGSQL_DIAG_DATATYPE_NAME - PGSQL_DIAG_CONSTRAINT_NAME - Requires Postgres 9.6 - PGSQL_DIAG_SEVERITY_NONLOCALIZED - phar: . Fixed bug #74991 (include_path has a 4096 char limit in some cases). (bwbroersma) . Fixed bug #65414 (deal with leading slash when adding files correctly). (bishopb) - readline: . Added completion_append_character and completion_suppress_append options to readline_info() if linked against libreadline. (krageon) - Session: . Fixed bug #74941 (session fails to start after having headers sent). (morozov) - SimpleXML: . Fixed bug #54973 (SimpleXML casts integers wrong). (Nikita) - SOAP: . Fixed bug #75464 (Wrong reflection on SoapClient::__setSoapHeaders). (villfa) . Fixed bug #70469 (SoapClient generates E_ERROR even if exceptions=1 is used). (Anton Artamonov) - SPL: . Fixed bug #74977 (Appending AppendIterator leads to segfault). (Andrew Nester) . Fixed bug #75173 (incorrect behavior of AppendIterator::append in foreach loop). (jhdxr) . Fixed bug #74372 (autoloading file with syntax error uses next autoloader, may hide parse error). (Nikita) . Fixed bug #75878 (RecursiveTreeIterator::setPostfix has wrong signature). (cmb) . Fixed bug #74519 (strange behavior of AppendIterator). (jhdxr) . Fixed bug #76131 (mismatch arginfo for splarray constructor). (carusogabriel) - SQLite3: . Updated bundled libsqlite to 3.24.0. (cmb) - Standard: . Added is_countable() function. (Gabriel Caruso) . Fixed bug #75916 (DNS_CAA record results contain garbage). (Mike, Philip Sharp) . Fixed unserialize(), to disable creation of unsupported data structures through manually crafted strings. (Dmitry) . Fixed bug #75409 (accept EFAULT in addition to ENOSYS as indicator that getrandom() is missing). (sarciszewski) . Fixed bug #74719 (fopen() should accept NULL as context). (Alexander Holman) . Fixed bug #69948 (path/domain are not sanitized in setcookie). (cmb) . Fixed bug #75996 (incorrect url in header for mt_rand). (tatarbj) . Remove superfluous warnings from inet_ntop()/inet_pton(). (daverandom) - Testing: . Implemented request #62055 (Make run-tests.php support --CGI-- sections). (cmb) - Tidy: . Fixed bug #74707 (Tidy has incorrect ReflectionFunction param counts for functions taking tidy). (Gabriel Caruso) - Zlib: . Added zlib/level context option for compress.zlib wrapper. (Sara)