NEWS

PHP 4.0                                                                    NEWS
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27 March 2000, Version 4.0 Release Candidate 1
- Fixed a data corruption bug in mysql_result(), if used in table.fieldname
  mode (Zeev)
- Fixed a crash problem in func_num_args(), func_get_arg() and func_get_args()
  when used as function arguments (Andi)
- Added get_class_methods(string classname) function. (Andrei)
- Don't default to iso-8859-1 since this confuses some browsers (Rasmus)
- stristr() no longer modifies it's arguments. (Thies)
- Make it possible to specify both a port and a socket in
  mysql_[p]connect (Rasmus)
- Added --disable-pic for disabling generating PIC for shared objects
  on platforms which support it (i.e. Linux) (Sascha)
- serialize()/unserialize() now call __sleep() and __wakeup() when
  working on objects. (Thies)
- renamed to_string() method to __string_value() for consistency.
  (Thies, Zend library)
- Fixed a bug in the third argument to define()
- Added is_numeric() that returns true if the argument is a number
  or a numeric string. (Andrei)
- domxml now supports libxml 2.0 Beta and drops support for older versions,
  due to massive changes in libxml
- fixed possible crash in unserialize() if serialized data was
  corrupted. (Thies)
- Changed $HTTP_STATE_VARS to $HTTP_SESSION_VARS. Use only the latter
  version now! (Andrei)
- Add GD-JPEG Support (Rasmus)
- Prevent from loading dynamic PHP modules which were compiled with different
  debug and thread safety modes than PHP, which resulted in a crash (Andi)
- connection_aborted() and friends work again. (Thies)
- Added include_once() and require_once() functionality (Andi, Zend library)
- Removed support for pdflib < 3.0 (Uwe)
- Added auto-registration of everything in $HTTP_SESSION_VARS[] if
  register_globals is turned off. (Andrei)
- Cleaned up extension namespace (Stig)
- OCINLogon() sessions are now closed again. (Thies)
- Added ip2long() and long2ip(),
  courtesy of Faisal Nasim <faisal@nasim.org> (Andrei)
- Added ftruncate() and fstat(),
  courtesy of Faisal Nasim <faisal@nasim.org> (Andrei)
- Added parse_ini_file().  Currently implemented in non thread safe version
  of PHP, and currently lacks section support (Zeev)
- "none" is now equivalent with "" in Apache config directives (Stig)
- OCINLogon no longer crashes. (Thies)
- Fix comparisons of (string) "nan" with (string) "nan". (Thies, Zend library)
- Switched back to the old $HTTP_*_VARS[] behavior - $HTTP_GET_VARS["foo"]
  and $foo are no longer references to each other, but separate variables
  like they were prior to PHP 4.0 Beta 4 (Zeev)
- Fixed Sybase-DB compilation (Zeev)
- Fixed a (fairly common) situation where error_reporting values would not be
  properly restored after a call to error_reporting(), in between requests (Zeev)
- The various $HTTP_*_VARS[] are now protected, and cannot be manipulated by
  user input (Zeev)
- Added ini_set() as an alias to ini_alter() (Zeev)
- The string None is now recognized as a keyword by the php.ini processor, and
  can be used to denote an empty string (Zeev)
- Added get_class_vars(string class_name) and get_object_vars(object obj)
  functions. (Andrei, Zend library)
- Add pdf_set_parameter(), pdf_skew(), pdf_show_boxed() (Uwe)
- Fixed comparison of (string) "inf" with (string) "inf", which was erroneously
  returning false (Zeev)
- Implemented default_charset and default_mimetype config directives (Stig)
- Ported T1lib support from PHP3. (Jouni)
- Fixed -DEAPI inheritance from APXS. (Sascha)
- Fixed possible crash in module-shutdown. (Thies)
- Fixed safe_mode_protected_env_vars INI directive (Zeev)
- Fixed getrusage() (Sascha)
- Fixed OCI8 crash when returning cursors from stored-procedures. (Thies)

21 February 2000 Version 4.0 Beta 4 patch level 1 
- Fixed crash when magic_quotes were switched off. (Thies)
- Support for pdflib 2.30 (Uwe)

20 February 2000, Version 4.0 Beta 4
- Introduced $HTTP_POST_FILES[], that contains information about files uploaded
  through HTTP upload (Zeev)
- Made PHP work under Microsoft Personal Web Server, under both Windows NT
  workstation and Windows 95 (Zeev)
- Made multipart/form-data content obey to the variables_order directive (Zeev)
- Updated the browscap module to work with PHP 4.0 (Zeev)
- Recover gracefully in ISAPI after the client prematurely presses STOP (Andi)
- Fix bug in unset() on array offsets which are referenced more than once
  (Andi, Zend library)
- Improved ISAPI module - it should no longer be necessary to set PHP as
  an ISAPI filter, only as an ISAPI extension, unless you wish to perform
  authentication using PHP.  This didn't yet get enough testing, but it
  should work (Zeev)
- Fixed RFC1867 file upload under Windows (Zeev)
- Initital support for pdflib 2.20 (Uwe)
- Added PostgreSQL support for DB (Rui Hirokawa <louis@cityfujisawa.ne.jp>)
- Re-introduced "none" for disabling auto_prepend/append_file (Stig)
- Added DB/storage (Stig, PEAR)
- Introduced DB warnings (Stig, PEAR)
- Fix overrun in strip_tags (Stas)
- Fixed crash in strip_tags() and related functions. (Thies)
- Workaround for bogus POST-Data from IE/Mac. (Thies)
  Patch by Alain Malek <alain@virtua.ch>
- Finished the server abstraction layer;  All of the PHP code is now shared
  across different servers (Apache, CGI, IIS, etc.), except for thin
  interface modules (Zeev)
- Added NULL-support in gettype(). (Thies)
- base64_decode() will decode POST data correct. (Thies)
  Patch submitted by: Turadg Aleahmad <turadg@wise.berkeley.edu>
- Much more work on domxml. Build xml tree, create xml doc works (Uwe)
- Made foreach() work on objects. (Thies, Zend library)
- Added domxml extension based on libxml, still little functionality (Uwe)
- Fixed memory corruption in fgetss(), strip_tags() and gzgetss() (Zeev)
- Updated calendar dynamic library to work with PHP 4. (Evan)
- Added strncmp() function, courtesy of Walter. (Andrei)
- Made the output of var_dump() more informative. (Thies)
- Fixed some OCIBindByName() problems. (Thies)
- Protect the ISAPI module against exceptions.  Stack overflows in scripts are
  now nicely detected and handled (Zeev)
- Fixed possible buffer-overflow in base64_decode. (Thies)
- Fixed possible buffer-overflow in setcookie(). (Thies)
- Fixed signal() bug that could cause the Apache master process to
  die. (Thies)
- Added session_set_cookie_params() function. (Andrei)
- If header information is sent after output has already been sent, the warning
  message will now state the filename and line number at which the first output
  was made (Zeev)
- Added the XML Expat library to the standard PHP source distribution thanks
  to its author James Clark (Andi & Zeev)
- Added XML support to the default Win32 build (Andi & Zeev)
- Added socket_get_status() function. Renamed:
    set_socket_timeout() -> socket_set_timeout()
    set_socket_blocking() -> socket_set_blocking(). (Andrei)
- Added realpath() function. (Andrei)
- mktime interprets years in the range 0-70 now as 2000-2070. You can
  continue to specify the complete year (i.e. 1920) (Sascha)
- Added the ability to control the environment variables the user is allowed
  to change in Safe Mode, using INI directives (Zeev)
- Fixed a crash bug in strtr() working on large input strings (Zeev)
- Ora_GetColumn()/Ora_FetchInto() now return NULL for NULL-Columns. (Thies)
- OCI8 now supports binding of NULL-values. Module cleanups. (Thies)
- Added ability to set timeout on socket read operations through
  set_socket_timeout() function. (Andrei)
- Added implicit_flush INI directive (Zeev)
- Added implicit_flush() to control whether flush() should be called
  implicitly after any output (Zeev)
- Fixed a crash in pfsockopen() (Zeev)
- Fixed a possible crash in phpinfo() (Zeev)
- Added register_argc_argv INI directive, to allow to selectively disable
  the declaration of the $argv and $argc variables for increased
  performance (Zeev)
- Added $HTTP_ENV_VARS[] and $HTTP_SERVER_VARS[] support, which similarly
  to $HTTP_GET_VARS[], contain environment and server variables.  Setting
  register_globals to Off will now also prevent registration of the
  environment and server variables into the global scope (Zeev)
- Renamed gpc_globals INI directive to register_globals (Zeev)
- Introduced variables_order that deprecates gpc_order, and allows control
  over the server and environment variables, in addition to GET/POST/Cookies
  (Zeev)
- new function cpdf_set_document_limits() (Uwe)
- Applied safe-mode patch to popen(). (Patch by Kristian Köhntopp)
- str_repeat() now returns correct length. (Thies)
- Don't assume libz and libpng are installed for the GD checks (Rasmus)
- Implemented support for <boolean> and <null> types according
  to WDDX version 1.0 (Andrei)
- Made var_dump()/serialize()/unserialize() NULL aware. (Thies)
- Added new NULL constant (Zeev, Zend library)
- Fixed -c support in the standalone CGI binary (Zeev)
- Increased PHP's performance by 5-15% using a new memory cache (Andi & Zeev,
  Zend library)
- Improved the php.ini reader to support constants and bitwise operators (Zeev)
- Fixed strrev() to no longer modify arg1. (Thies)
- Fixed buffer overruns in iptcembed(). (Thies)
- Fixed a bug in ODBC error reporting (Zeev)
- Added PHP_Logo_GUID() and Zend_Logo_GUID() functions, that return the GUIDs
  of the PHP and Zend logos used in phpinfo() (Zeev)
- Added GNU Pth support (Sascha, TSRM library)
- Removed select(), fd_set() and fd_isset() - will be reimplemented soon! (Thies)
- Improved Win32 performance significantly by using different mutexes (Zeev,
  TSRM library)
- Made quotemeta() and preg_quote() binary-safe. (Andrei)
- Added UDP support in fsockopen(). (Evan)
- Added --disable-pear option (Andrei)
- Renamed libzend repository to Zend (Zeev)
- Added support for thttpd (Sascha)
- Added session.cache_limiter and cache_expire options (Sascha)
- Restored the PHP_VERSION and PHP_OS constants (Zeev)
- Added get_loaded_extensions(), extension_loaded(), and
  get_extension_funcs() functions. (Andrei)
- Added date/time stamping to PHP error log file. (Andrei, Joey)
- Added is_subclass_of() function (Andrei, Zend library)
- Implemented count_chars(). (Thies)
- Added class_exists() function (Andrei, Zend library)
- Made strspn() and strcspn() binary-safe. (Andrei)
- Added array_multisort() function. (Andrei)
- Made pageinfo.c thread-safe (Sascha)
- Made implode() binary-safe (Andrei)
- Made strstr(), stristr(), and ucwords() binary-safe() (Andrei)
- Made strtoupper(), strtolower(), substr_replace() binary-safe. (Andrei)
- Fix a crash in the Apache syntax highlighting mode (Zeev)
- Report all ODBC error's not just the one on the top of the stack (lurcher)
- OCI8 now returns NULL values in LONG columns correct. (Thies)
- Added support for a C-like assert() function. (Thies)
- Added CyberCash support. (Evan)
- Made explode() binary-safe. (Thies)
- Made strpos() binary-safe. (Thies)
- Added XML_Set_Object() function, now you can use the XML-Parser from
  within an object. (Thies)
- Session vars are now decoded into $HTTP_STATE_VARS[] array and the
  globals, depending on track_vars and gpc_globals settings (Andrei)
- Added get_used_files() function - returns a hash mapping the use()'d files
  to their full path (Zeev)
- PHP 4 scripts will now obey the max_execution_time setting and actually
  time out (Rasmus)
- Added configure command to phpinfo() output (Stig)
- Added optional socket path to the mysql_?connect() functions (Rasmus)
- Made mysql and gd work as shared extensions again (Stig)
- Make the global GET/POST/Cookie variables and their $HTTP_*_VARS[] counterparts
  be references to each other (Zeev)
- Added support for the 'use' keyword - behaves like 'require', but will not
  use the same file more than once (Andi & Zeev, Zend library)
- Added check to see if a persistent connection is still valid with the
  ODBC interface before reusing (nick@easysoft.com)
- Added DBMaker support (patch by Pax Tsai <paxtsai@lion.syscom.com.tw>)
- Renamed "PECL" to "PEAR" (PHP Extension and Add-on Repository) (Stig)
- buildconf now uses build.mk (Stig)
- Disable symlinks to urls (Rasmus)
- Informix driver now reflects version of ESQL/C used  (Danny)
- Modified session_register() to take variable number of arguments (Andrei)
- Fixed file descriptor leak in thread safe mode (Zeev, Zend library)
- Added select(), fd_set() and fd_isset() (Evan)
- cpdf support has been ported from php3, needs ClibPDF 2.x (Uwe)
- Fixed a leak when using automatic output buffering (Zeev)
- Introduced PECL - PHP Extension and Code Library
  (prounounced "pickle") (Stig)
- Fixed inconsistencies in the implementation of here-docs (Andi & Zeev, Zend 
  library)
- Fixed a problem with constant class-member initializations (Andi & Zeev,
  Zend library)
- Fixed float-compare in min(),max(),a[r]sort(),[r]sort() (Thies)
- Implemented get_html_translation_table() function (Thies)
- Implemented array_flip() function. Returns input-array with key, value
  flipped (Thies)
- Added Berkeley DB3 support in DBA (Sascha)
- Implemented 2-Arg version of strtr($str,$translation_array). This can be used
  to revert what htmlspecialchars() did (Thies)
- Fixed mem-overwrite in XML_Parse_Into_Struct (Thies)
- Added substr_replace() function (Andrei)

November 16 1999, Version 4.0 Beta 3
- ucfirst()/ucwords() no longer modify arg1 (Thies)
- Fixed strtr() not to modify arg1 (Thies)
- Added Win32 build files for Informix driver and make it
  compile with ZTS (danny)
- Added tmpfile() function (Stig)
- Upgraded regex library to alpha3.8 (Sascha)
- Fixed selecting nested-tables in OCI8. (Thies)
- RFC-854 fix for internal FTP-Code. Commands have to end in "\r\n" (Thies)
- Fix OpenLink ODBC support (Stig)
- min(),max(),a[r]sort(),[r]sort(),k[r]sort() now work consistent with the 
  language-core. (Thies)
- tempnam() now uses mkstemp() if available (Stig)
- serialize() and var_dump() now honor the precision as set in php.ini
  for doubles. (Thies)
- Improved the Win32 COM module to support [out] parameters (Boris Wedl)
- Fixed garbage returned at the end of certain Sybase-Columns (Thies)
  Patch submitted by: neal@wanlink.com
- Added Microsoft SQL Server module for Win32 (Frank)
- Added support for forcing a variable number of internal function arguments
  by reference. (Andi & Zeev, Zend library)
- Implemented getprotoby{name,number} (Evan)
- Added array_pad() function. (Andrei)
- Added new getservby{name,port} functions. (Evan)
- Added session.cookie_path and session.cookie_domain (Sascha)
- Continue processing PHP_INI_SYSTEM knownDirectives after extension=
  (Sam Ruby)
- Enable IBM DB2 support - Tested against DB2 6.1 UDB on Linux (Rasmus)
- Added new str_repeat() function. (Andrei)
- Output-Buffering system is now Thread-Safe. (Thies)
- implemented OCI8 $lob->WriteToFile() function - very useful for streaming
  large amounts of LOB-Data without to need of a huge buffer. (Thies)
- Added session.use_cookies option (Sascha)
- Added getcwd() function. (Thies)
- XML_Parse_Into_Struct no longer eats data. (Thies)
- Fixed parse_url('-') crash. (Thies)
- added === operator support. (Andi & Thies, Zend library)
- unserialize() now gives a notice when passed invalid data. (Thies)
- Fixed shuffle() so that it no longer breaks on Solaris. (Andrei)
- Added is_resource(), is_bool() functions. (Thies)
- Cleaned up File-Module (Thies)
- Upgraded math-funtions to use new Zend function API (Thies)
- Fixed zombie problem in shell_exec() and $a = `some_command`
  constructs. (Thies)
- Thies introduced ZEND_FETCH_RESOURCE2 (Danny).
- Added Informix driver to list of maintained extensions. (Danny).
- Informix driver : Changed ifx.ec to use the new high-performance
  ZEND API. (Danny)
- IXF_LIBDIR environment variable specifies alternate Informix library
  path for configure (Danny).
- Fixed gmmktime() so that the following should always be true:
  gmmktime([args]) == mktime([args]) + date('Z', mktime([args])) (Jouni)
- setlocale doesn't anymore screw up things if you forgot to change it back
  to the original settings. (Jouni)
- Switched to new system where ChangeLog is automagically updated from commit
  messages. NEWS file is now the place for public announcements. (Andrei)
- Fixed refcount problem in XML module. (Thies)
- Fixed crash in HTTP_RAW_POST_DATA handling (Thies)
- You can use resources as array-indices again (Thies, Zend library)
- Fixed pg_fetch_array() with three arguments (Sascha)
  Patch submitted by: brian@soda.berkeley.edu
- Upgraded a lot internal functions to use new Zend function API (Thies)
- fdf support ported; not completely tested with latest version 4.0 for
  glibc (Uwe)
- OCI8 connections are now kept open as long as they are referenced (Thies)
- Cleaned up Directory-Module (Thies)
- Small fix in Ora_Close (Thies)
- Ported range() and shuffle() from PHP 3 to PHP 4 (Andrei)
- Fixed header("HTTP/..."); behaviour (Sascha)
- Improved UNIX build system. Now utilizes libtool (Sascha)
- Upgrade some more internal functions to use new Zend function API. (Thies, 
  Zend library)
- Fixed backwards incompatibility with ereg() (Thies)
- Updated Zend garbage collection with a much more thorough method.
  (Andi, Zend library)
- Added the ability to use variable references in the array() construct.
  For example, array("foo" => &$foo). (Andi, Zend library)
- Added array_reverse() function (Andrei)
- Some more XML fixes/cleanups (Thies)
- Updated preg_replace() so that if any argument passed in is an array
  it will make a copy of each entry before converting it to string so that
  the original is intact. If the subject is an array then it will preserve
  the keys in the output as well (Andrei) 
- Updated OCI8 to use the new high-performance Zend function API. (Thies)
- Configure speedup (Stig)
- Fixed LOB/Persistent-Connection related OCI8-Crash (Thies)
- Generalized server-API build procedure on UNIX (Stig)
- Added '--disable-rpath' option (Sascha)
- Added AOLserver SAPI module (Sascha)
- Fixed XML Callbacks. (Thies)
- Updated ODBC to use the new high-performance Zend function API (kara)
- Updated zlib to use the new high-performance Zend function API. (Stefan)
- Updated preg_split() to allow returning only non-empty pieces (Andrei)
- Updated PCRE to use the new high-performance Zend function API (Andrei)
- Updated session, dba, mhash, mcrypt, sysvshm, sysvsem, gettext modules to use
  the new high-performance Zend function API (Sascha)
- Extended var_dump to handle resource type somewhat (Andrei)
- Updated WDDX to use the new high-performance Zend function API (Andrei)
- Updated XML to use the new high-performance Zend function API. (Thies)
- Updated Oracle to use the new high-performance Zend function API. (Thies)
- Improved the performance of the MySQL module significantly by using the new
  high-performance Zend function API. (Zeev)
- Add support for the Easysoft ODBC-ODCB Bridge (martin@easysoft.com)
- Fix bug in odbc_setoption, getParameter call incorrect (martin@easysoft.com)
- Ora_Fetch_Into now resets the returned array in all cases (Thies) 
- Fixed NULL-Column problem in Oracle-Driver (Thies)
- Added extra metadata functions to ODBC, SQLTables etc (nick@easysoft.com)
- Fixed SEGV in mcal make_event_object() and
  typo in mcal_list_alarms() (Andrew Skalski)
- Fixed Ora_PLogon (Thies)
- Resourcified Oracle (Thies)
- Implemented object serialization/deserialization in WDDX (Andrei)
- Added krsort() function (Thies)
- Added func_num_args(), func_get_arg() and func_get_args() for standard
  access to variable number of arguments functions (Zeev)
- Added FTP support (Andrew Skalski)
- Added optional allowable_tags arguments to strip_tags(), gzgetss() and
  fgetss() to allow you to specify a string of tags that are not to be
  stripped  (Rasmus)
- Upgraded var_dump() to take multiple arguments (Andrei)
- Resourcified XML (Thies)
- Fixed a memory leak in the Apache per-directory directives handler (Zeev)
- Added array_count_values() function. (Thies)
- snmp, pgsql, mysql and gd modules can be built as dynamically loaded 
  modules (Greg)
- OCI8 fix for fetching empty LOBs (Thies)
- Added user-level callbacks for session module (Sascha)
- Added support for unknown POST content types (Zeev)
- Added "wddx" serialization handler for session module (Sascha)
  (automatically enabled, if you compile with --with-wddx)
- Fixed unserializing objects (Thies)
- PHP 4.0 now serializes Objects as 'O' (not understood by PHP 3.0), but
  unserializes PHP 3.0 serialized objects as expected. (Thies)
- Made serialize/unserialize work on classes. If the class is known at 
  unserialize() time, you'll get back a fully working object! (Thies)
- Reworked preg_* functions according to the new PCRE API, which also made
  them behave much more like Perl ones (Andrei)
- Made it possible to specify external location of PCRE library (Andrei)
- Updated bundled PCRE library to version 2.08 (Andrei)
- count()/is_array/is_object... speedups. (Thies)
- OCI8 supports appending and positioning when saving LOBs (Thies)
- Added metaphone support (Thies)
- OCI8 doesn't use define callbacks any longer. (Thies) 
- OCI8 Driver now supports LOBs like PHP 3.0. (Thies)
- var_dump now dumps the properties of an object (Thies)
- Rewrote the GET/POST/Cookie data reader to support multi-dimensional
  arrays! (Zeev)
- Renamed allow_builtin_links to expose_php (defaults to On).  This directive
  tells PHP whether it may expose its existence to the outside world, e.g.
  by adding itself to the Web server header (Zeev)
- Added support for transparent session id propagation (Sascha)
- Made WDDX serialize object properties properly (Andrei)
- Fixed WDDX mem leak when undefined variable is passed in
  for serialization (Andrei)
- Added session_unset() function (Andrei)
- Fixed double session globals shutdown crash (Andrei)
- Fixed crash related to ignore_user_abort ini entry (Andrei)
- Added support for external entropy sources for session id creation 
  (on Unices /dev/random and /dev/urandom) (Sascha)
- Added gpc_globals variable directive to php.ini.  By default it is On, but
  if it is set to Off, GET, POST and Cookie variables will not be inserted
  to the global scope.  Mostly makes sense when coupled with track_vars (Zeev)
- Added versioning support for shared library (Sascha)
  This allows concurrent use of PHP 3.0 and PHP 4.0 as Apache modules. See
  the end of the INSTALL file for more information.
- Added second parameter to array_keys which specifies search value
  for which the key should be returned (Andrei)
- Resourcified Informix driver (Danny)
- New resource handling for odbc, renamed to php_odbc.[ch]
- Make set_time_limit() work on Unix (Rasmus)
- Added connection handling support (Rasmus)
- Improved the Sybase-CT module to make use of resources (Zeev)
- Improved the mSQL module to make use of resources (Zeev)
- Changed mysql_query() and mysql_db_query() to return false in case of saving
  the result set data fails (Zeev)
- Improved the resource mechanism - resources were not getting freed as soon
  as they could (Zeev)
- Added shared memory module for session data storage (Sascha)
- Fixed session.auto_start (Sascha)
- Fixed several problems with output buffering and HEAD requests (Zeev)
- Fixed HTTP Status code issue with ISAPI module (Zeev)
- Fixed a problem that prevented $GLOBALS from working properly (Zeev, Zend
  library)
- Ported newest GetImageSize (Thies)
- Added session compile support in Win32 (Andi)
- Added -d switch to the CGI binary that allows overriding php.ini values
  from the command line (Zeev)
- Fixed a crash that would occur if wddx_deserialize did not receive
  a valid packet (Andrei)
- Fixed a bugglet when redefining a class at run-time (Andi, Zend library)
- Fixed sem_get() on AIX (Sascha)
- Fixed fopen() to work with URL's in Win32 (Andi & Zeev)
- Fixed include_path for Win32 (Andi, Zend library)
- Fixed bug in ISAPI header sending function (Charles)
- Fixed memory leak when using undefined values (Andi & Zeev, Zend library)
- Added output_buffering directive to php.ini, to enable output buffering
  for all PHP scripts - default is off (Zeev).
- Fixed some more class inheritance issues (Zeev, Zend library)
- Fixed Apache build wrt to shared modules on FreeBSD/Linux (Sascha)
- Added session.extern_referer_chk which checks whether session ids were
  referred to by an external site and eliminates them (Sascha)
- Improved session id generation (Sascha)
- Improved speed of uniqid() by using the combined LCG and removing
  the extra usleep() (Sascha)
- Introduced general combined linear congruential generator (Sascha)
- Made ldap_close back into an alias for ldap_unbind (Andrei)
- OciFetchInto now resets the returned array in all cases (Thies)
- Fixed mysql_errno() to work with recent versions of MySQL (Zeev)
- Fixed a problem with define() and boolean values (Zeev)
- Fixed inclusion of gd/freetype functions (Sascha)
- Fixed persistency of MHASH_* constants (Sascha)
- Oracle is now ZTS-Safe (Thies)
- Fixed flushing of cached information to disk in DBA's DB2 module (Sascha)
- OCI8 is now ZTS-Safe (Thies)
- Fixed is_writeable/is_writable problem; they are both defined now (Andrei)
- Imported PHP 3.0 diskfreespace() function (Thies)
- Fixed thread-safety issues in the MySQL module (Zeev)
- Fixed thread-safe support for dynamic modules (Zeev)
- Fixed Sybase CT build process (Zeev)

August 9 1999, Version 4.0 Beta 2
- Fixed a problem when sending HTTP/1.x header lines using header() (Zeev)
- Win32 builds now include the ODBC module built-in (Zeev)
- Fixed SYSV-SHM interface (Thies).
- Updated hyperwave module, made it thread safe
- Updated pdflib module, version 0.6 of pdflib no longer supported
- Updated fdf module
- Built-in phpinfo() links are now turned off by default.  They can be turned
  on using the allow_builtin_links INI directive (Zeev)
- Changed phpinfo() to list modules that have no info function (Zeev)
- Modified array_walk() function so that the userland callback is passed
  a key and possible user data in addition to the value (Andrei)
- Fixed ldap_search(), ldap_read() and ldap_list() (Zeev)
- Fixed Apache information in phpinfo() (sam@breakfree.com)
- Improved register_shutdown_function() - you may now supply arguments that
  will be passed to the shutdown function (Zeev)
- Improved call_user_func() and call_user_method() - they now support passing
  arguments by reference (Zeev)
- Fixed usort() and uksort() (Zeev)
- Fixed md5() in the Apache module (Thies)
- Introduced build process for dynamic modules (Stig)
- Improved ISAPI module to supprt large server variables (Zeev)
- Imported PHP 3.0 fixes for problem with PHP as a dynamic module and Redhat
  libc2.1 in zlib module (Stefan)
- Fixed sybase_fetch_object() (Zeev)
- Made the IMAP module work with PHP 4.0 (Zeev)
- Fixed a problem with include()/require() of URLs (Sascha, Zeev)
- Fixed a bug in implode() that caused it to corrupt its arguments (Zeev)
- Added get_class($obj), get_parent_class($obj) and method_exists($obj,"name")
  (Andi & Zeev)
- Fixed various inheritance problems (Andi & Zeev, Zend library)
- Children now inherit their parent's constructor, if they do not supply a
  constructor of their own.
- Fixed runtime inheritance of classes (parent methods/properties were
  overriding their children) (Zeev, Zend library)
- Fixed backwards incompatibility with the "new" operator (Andi, Zend library)
- Fixed bugs in uksort() and ksort() sort ordering (Andrei)
- Fixed a memory leak when using assignment-op operators with lvalue of type
  string (Zeev, Zend library)
- Fixed a problem in inheritance from classes that are defined in include()d
  files (Zeev, Zend library)
- Fixed a problem with the PHP error handler that could result in a crash
  on certain operating systems (Zeev)
- Apache php_flag values only recognized 'On' (case sensitive) - changed
  to case insensitive (Zeev)
- Fixed a memory leak with switch statement containing return statements
  (Andi & Zeev, Zend library)
- Fixed a crash problem in switch statements that had a string offset
  as a conditional (Andi & Zeev, Zend library)
- Imported PHP 3.0 fixes for rand() and mt_rand() (Rasmus)
- Added function entries for strip_tags() and similar_text() (Andrei)
- Fixed a bug in WDDX that would cause a crash if a number was passed in
  instead of a variable name (Andrei)
- Ported strtotime() function from PHP 3.0 (Andrei)
- Merged in gdttf stuff from PHP 3.0 (Sascha)
- buildconf now checks your installation (Stig)
- XML module now built dynamically with --with-xml=shared (Stig)
- Added a check for freetype.h - fixed build on RedHat 6.0 (Zeev)
- Fixed array_walk() to work in PHP 4.0 (Andrei)
- Ported all remaining date() format options from PHP 3.0 (Andrei)
- $php_errormsg now works (Andrei)
- Added locale support for Perl Compatible Regexp functions (Andrei)
- Informix module ported (Danny)
- Removed --with-shared-apache (Sascha)
- Added patch for reverse lookup table in base64_decode (Sascha)
  Submitted by bfranklin@dct.com
- Merged in PHP 3.0 version of str_replace (Sascha)
- Added DBA module (Sascha)
- Added session id detection within REQUEST_URI (Sascha)
- Merged in HP-UX/ANSI compatibility switch from PHP 3.0 (Sascha)
- Fixed rpath handling for utilitites built during Apache build (Sascha)
- Added missing E_ error level constants (Zeev, Zend library)
- Fixed a bug in sending multiple HTTP Cookies under Apache (Zeev)
- Fixed implicit connect on the MySQL, mSQL, PostgreSQL and Sybase
  modules (Zeev)
- Gave PHP 4.0's SNMP extension all the functionality of PHP 3.0.12 (SteveL)
  
July 19 1999, Version 4.0 Beta 1
- First public beta of PHP 4.0