Annotation of embedaddon/php/UPGRADING, revision 1.1.1.1
1.1 misho 1: $Id: UPGRADING 321040 2011-12-15 10:31:02Z dmitry $
2:
3: UPGRADE NOTES - PHP 5.3
4:
5: 1. Reserved words and classes
6: 2. Changes made to existing functions
7: 3. Changes made to existing methods
8: 4. Changes made to existing classes
9: 5. Deprecated
10: 6. Undeprecated
11: 7. Extensions:
12: a. moved out to PECL and actively maintained there
13: b. no longer maintained
14: c. with changed behaviour
15: d. no longer possible to disable
16: 8. Changes in SAPI support
17: 9. Changes in INI directives
18: 10. Syntax additions
19: 11. Windows support
20: 12. New in PHP 5.3:
21: a. New libraries
22: b. New extensions
23: c. New stream wrappers
24: d. New stream filters
25: e. New functions
26: f. New global constants
27: g. New classes
28: h. New methods
29: i. New class constants
30:
31: =============================
32: 1. Reserved words and classes
33: =============================
34:
35: - **namespace** and **goto** are now reserved keywords.
36:
37: - **Closure** is now a reserved class. (Used by lambda and closure.)
38:
39: =====================================
40: 2. Changes made to existing functions
41: =====================================
42:
43: - Paths containing NULL (like /some/path\0foo.txt) are now considered invalid.
44: See http://news.php.net/php.internals/50191
45:
46: - The HTTP stream wrapper now considers all status codes from 200 to 399 to be
47: successful.
48:
49: - The array functions natsort(), natcasesort(), usort(), uasort(), uksort(),
50: array_flip(), and array_unique() no longer accept objects passed as arguments.
51: If you need to use them to access an object's properties, you must cast the
52: object to an array first.
53:
54: - var_dump() output now includes private object members.
55:
56: - session_start() now returns FALSE when the session startup fails.
57:
58: - property_exists() now checks the existence of a property independent of
59: accessibility (like method_exists()).
60:
61: - The $initial parameter for array_reduce can now be of any type.
62:
63: - clearstatcache() no longer clears the realpath cache by default.
64:
65: - realpath() is no longer system-dependent and works identically on all
66: platforms.
67:
68: - call_user_func() now propagates $this even if the callee is the parent class.
69:
70: - The filesystem functions opendir(), scandir(), and dir() now use the default
71: context if no context argument is passed.
72:
73: - The behaviour of functions with by-reference parameters called by value has
74: changed. Where previously the function would accept the by-value argument, a
75: warning is now emitted and all by-ref parameters are set to NULL.
76:
77: - There is now native support for the following math functions: asinh(),
78: acosh(), atanh(), log1p(), and expm1().
79:
80: - In the GD extension, there is now pixelation support available through
81: the imagefilter() function.
82:
83: - crypt() now has Blowfish and extended DES support, and crypt() features are
84: now 100% portable. PHP has its own internal crypt implementation which drops
85: into place when system support for crypt or crypt_r() is not found.
86:
87: - get_cfg_var() is now able to return "array" INI options.
88:
89: - Stream wrappers can now be used by the include_path INI directive.
90:
91: - These functions now take new parameters:
92: clearstatcache(): $clear_realpath_cache and $filename.
93: copy(): $context
94: fgetcsv(): $escape
95: ini_get_all(): $details
96: json_encode(): $options
97: json_decode(): $depth
98: nl2br(): $is_xhtml
99: parse_ini_file(): $scanner_mode
100: round(): $mode
101: stream_context_create(): $params
102: strstr(), stristr(): $before_needle
103: sybase_connect(): $new
104:
105: - And new mode option for fopen: 'n' (O_NONBLOCK)
106:
107: - The new mysqlnd library necessitates using MySQL's newer 41-byte password
108: format. Continued use of the old 16 byte passwords will cause mysql_connect()
109: and other related functions to produce the following error message:
110: "mysqlnd cannot connect to MySQL 4.1+ using old authentication"
111:
112: - The dl() function is now disabled by default, and only available under the
113: cli, cgi, and embed SAPIs.
114:
115: - mail() now supports the logging of sent mail.
116:
117: - stream_select(), stream_set_blocking(), stream_set_timeout(), and
118: stream_set_write_buffer() now work with user-space stream wrappers.
119:
120: - getopt() accepts "long options" now on all platforms.
121: Optional values and using = as a separator for short options are now
122: supported.
123:
124:
125: ===================================
126: 3. Changes made to existing methods
127: ===================================
128:
129: - The magic methods __get(), __set(), __isset(), __unset(), and __call() should
130: always be public and can no longer be static. Method signatures are enforced.
131:
132: - The __call() magic method is now invoked on access to private and protected
133: methods.
134:
135: - The __toString() magic method can no longer accept arguments.
136:
137: - There is a new magic method, __callStatic().
138:
139: - Internal count() vs. count_elements() handler resolution rules have changed.
140: (This could potentially break custom PHP extensions.)
141:
142: - The trailing / has been removed from SplFileInfo and other related directory
143: classes.
144:
145: - SplFileInfo::getpathinfo() now returns information about the path name.
146:
147: - There are new parameters in:
148: Exception::__construct(): $previous
149:
150: ===================================
151: 4. Changes made to existing classes
152: ===================================
153:
154: - SplObjectStorage now has ArrayAccess support. It is also now possible to
155: store associative information with objects in SplObjectStorage.
156:
157: =====================
158: 4.1 New in PHP 5.3.9
159: =====================
160:
161: - Write operations within XSLT (for example with the extension sax:output) are
162: disabled by default. You can define what is forbidden with the INI option
163: xsl.security_prefs. This option will be marked as deprecated in 5.4 again.
164: Use the method XsltProcess::setSecurityPrefs($options) there.
165:
166: - the following new directives were added
167:
168: - max_input_vars - specifies how many GET/POST/COOKIE input variables may be
169: accepted. default value 1000.
170:
171: =============
172: 5. Deprecated
173: =============
174:
175: - define_syslog_variables() is deprecated.
176:
177: - set_socket_blocking() is deprecated.
178:
179: - call_user_method() and call_user_method_array() are now deprecated. Use
180: call_user_func() and call_user_func_array() instead.
181:
182: - dl() is deprecated.
183:
184: - The set_magic_quotes_runtime() function is now deprecated.
185:
186: - mysql_listtables(), mysql_dropdb(), mysql_createdb(), mysql_list_tables(),
187: mysql_drop_db(), and mysql_create_db() are now deprecated.
188:
189: - All ereg functions are now deprecated and emit E_DEPRECATED errors:
190: sql_regcase(), spliti(), split(), ereg_replace(), eregi(),
191: ereg_replace(), and ereg().
192: Use the PCRE family of functions (preg_*()) instead.
193:
194: - mcrypt_generic_end() is deprecated.
195:
196: - mysql_db_query() is deprecated.
197:
198: - mysql_escape_string() is deprecated.
199:
200: - session_register(), session_unregister(), and session_is_registered() are now
201: deprecated. Use the $_SESSION superglobal array instead.
202:
203: - Comments starting with '#' are now deprecated in .INI files.
204:
205: - The following INI directives will now emit an E_DEPRECATED warning
206: upon startup if they are activated:
207:
208: - define_syslog_variables
209: - register_globals
210: - register_long_arrays
211: - safe_mode
212: - magic_quotes_gpc
213: - magic_quotes_runtime
214: - magic_quotes_sybase
215:
216: - The is_dst parameter to mktime() is deprecated.
217:
218: - Assigning the return value of "new" by reference is deprecated
219:
220: - Call-time pass-by-reference has been deprecated
221:
222: - Usage of {} to access string offsets is deprecated
223:
224: - Passing locale category name as string to setlocale() is deprecated.
225:
226: ===============
227: 6. Undeprecated
228: ===============
229:
230: - By popular request, is_a() is no longer deprecated.
231:
232: ==============
233: 7. Extensions:
234: ==============
235:
236: a. moved out to PECL and actively maintained there
237:
238: - fdf
239: - ming
240: - ncurses
241:
242: b. no longer maintained
243:
244: - dbase
245: - fbsql
246: - msql
247: - sybase (use sybase_ct, which is still in PHP core)
248: - mhash (hash has full BC layer)
249: - mime_magic (use fileinfo, has full BC layer)
250:
251: c. with changed behaviour
252:
253: - dns: dns_check_record() will now return an extra "entries" index,
254: containing the TXT elements.
255:
256: - datetime: date/time functions will no longer use the TZ environment
257: variable to guess which timezone should be used.
258:
259: - cURL now supports SSH
260:
261: - hash: The SHA-224 and salsa hash algorithms are now supported.
262:
263: - mbstring: Now supports CP850 encoding.
264:
265: - oci8: Database Resident Connection Pooling (DRCP) and Fast Application
266: Notification (FAN) are now supported.
267:
268: Oracle External Authentication is now supported (except on Windows).
269:
270: The oci8 function oci_bind_by_name() now supports SQLT_AFC (aka the
271: CHAR datatype).
272:
273: Calling oci_close() on a persistent connection, or when the variable
274: that references a persistent connection goes out of scope, will now
275: trigger a roll back of an uncommitted transaction. To avoid unexpected
276: behavior explicitly issue a commit or roll back as needed. The old
277: behavior can be enabled with the INI directive
278: oci8.old_oci_close_semantics.
279:
280: - openssl: OpenSSL digest and cipher functions are now supported.
281: It is also now possible to access the internal values of DSA, RSA and
282: DH keys.
283:
284: - session: Sessions will no longer store session-files in "/tmp" when
285: open_basedir restrictions apply, unless "/tmp" is explicitly added to
286: the list of allowed paths.
287:
288: - SOAP: Now supports sending user-supplied HTTP headers.
289:
290: - MySQLi: Now supports persistent connections by prepending the hostname
291: with "p:".
292:
293: - imagepstext now rejects invalid antialiasing steps and raises a warning.
294:
295: d. no longer possible to disable
296:
297: - PCRE
298: - Reflection
299: - SPL
300:
301: ==========================
302: 8. Changes in SAPI support
303: ==========================
304:
305: - A new "litespeed" SAPI is now available.
306:
307: - FastCGI is now always enabled and can not be disabled. See sapi/cgi/CHANGES
308: for more details.
309:
310: - A new CGI SAPI option, -T, can be used to measure execution time of a script
311: repeated several times.
312:
313: - CGI/FastCGI now has support for .htaccess style user-defined php.ini files.
314: See the new user_ini.filename and user_ini.cache_ttl INI directives.
315:
316: ============================
317: 9. Changes in INI directives
318: ============================
319:
320: - zend_extension_debug and zend_extension_ts have been removed. Always use the
321: zend_extension directive to load Zend Extensions.
322:
323: - zend.ze1_compatibility_mode has been removed. If this INI directive is set to
324: on, then an E_ERROR is emitted at startup.
325:
326: - There is now support for special sections: [PATH=/opt/httpd/www.example.com/]
327: and [HOST=www.example.com]. Directives set in these sections cannot be
328: overridden by user-defined INI files or at runtime.
329:
330: - Added mbstring.http_output_conv_mimetype. This directive specifies the
331: regex pattern of content types for which mb_output_handler() is activated.
332:
333: - It is now possible to use the full path to load modules using the "extension"
334: directive.
335:
336: - "INI variables" can now be used almost anywhere in a php.ini file.
337:
338: - It is now possible to use alphanumeric or variable indices in INI option
339: arrays.
340:
341: - open_basedir is now PHP_INI_ALL
342:
343: - Runtime tightening of open_basedir restrictions is now possible.
344:
345: - The default value of session.use_only_cookies has changed to "1".
346:
347: - The default value of oci8.default_prefetch has been changed from 10 to 100.
348:
349: - A new directive, request_order, controls the behavior of $_REQUEST
350: independently of variables_order.
351: - A new directive, called windows.show_crt_warning, has been introduced.
352: This directive shows the CRT warnings when enabled. These warnings were
353: displayed by default until now. It is disabled by default.
354:
355: - New INI directives:
356: - mail.add_x_header
357: - user_ini.filename
358: - user_ini.cache_ttl
359: - exit_on_timeout
360: - mysqli.allow_persistent
361: - mysqli.default_host
362: - mysqli.default_socket
363: - mysqli.allow_local_infile
364: - mysqli.cache_size
365: - oci8.connection_class
366: - oci8.events
367: - pdo_mysql.default_socket
368: - pdo_mysql.cache_size
369: - sqlite3.extension_dir
370: - mysql.default_socket
371: - mysql.allow_local_infile
372: - mysql.cache_size
373: - mysqlnd.collect_statistics
374: - mysqlnd.collect_memory_statistics
375: - mysqlnd.net_cmd_buffer_size
376: - mysqlnd.net_read_buffer_size
377: - mysqlnd.log_mask
378:
379:
380: ====================
381: 10. Syntax additions
382: ====================
383:
384: - NOWDOC: Similar to HEREDOC, but with single quotes:
385:
386: <<<'LABEL' ...
387:
388: Static HEREDOCs can be used to initialize static variables and class members
389: or constants:
390:
391: static $foo = <<<LABEL
392: No variables here...
393: LABEL;
394:
395: - HEREDOC now supports wrapping the identifier with double-quotes, to complement
396: the NOWDOC syntax:
397:
398: <<<"LABEL" ...
399:
400: - The ?: operator has been introduced:
401:
402: var_dump(0 ?: 'Hello!');
403:
404: - Namespaces were added:
405:
406: namespace my\name;
407: $obj = new \my\name\MyClass;
408:
409: - Dynamic access to static methods is now possible:
410:
411: $foo::myFunc();
412:
413: - Exceptions can now be nested:
414:
415: class MyCustomException extends Exception {}
416: try {
417: throw new MyCustomException("Something happend", 112);
418: } catch(Exception $e) {
419: throw new InvalidArgumentException("You are doing it wrong!", 911, $e);
420: }
421:
422: - Exceptions can now be handled in destructors.
423:
424: - A garbage collector has been added and is enabled by default.
425:
426: ===================
427: 11. Windows support
428: ===================
429:
430: - The minimum Windows version is now Windows 2000. (Windows 98, ME and NT4 are
431: no longer supported).
432:
433: - PHP Windows binaries target i586 or later. i386 and i486 are not supported.
434:
435: - Support for the IIS SAPI has been dropped. Use the FastCGI SAPI instead
436: (available for IIS5 and later)). FastCGI is the recommended way to use PHP
437: with IIS (see http://php.iis.net/).
438:
439: - A new build is available based on the latest Visual C++ Compiler (VC9).
440: Its use is recommended with FastCGI or CLI. Apache's Windows binaries are not
441: compatible with VC9; however, you can use Apache Lounge's build
442: (http://apachelounge.com).
443:
444: - The x64 binaries are for experimental usage only. They are not meant to be
445: used in production.
446:
447: - A new site is available to download Windows releases as well as Windows-only
448: releases: http://windows.php.net. Windows-specific releases will be made to
449: fix security issues in the bundled libraries (libpng, openssl, etc.). Please
450: note that this site does not replace the main PHP site as a source of PHP
451: news, resources, or documentation.
452:
453: - Windows support has been added for the following functions: getopt(),
454: imagecolorclosesthwb(), mcrypt_create_iv(), inet_ntop(), inet_pton(),
455: getmxrr(), checkdnsrr(), dns_get_record(), linkinfo(), readlink(),
456: symlink(), link(), fnmatch(), stream_socket_pair(), time_nanosleep(),
457: time_sleep_until(), and socket_create_pair().
458:
459: - Crypt supports now all available algorithms on Windows (blowfish included).
460:
461: - Improved portability of stat(), touch(), filemtime(), filesize() and related
462: functions (100% portable for the available data).
463:
464: - It is now possible to create hard links on Windows using the link() function,
465: and symbolic links using the symlink() function. Hard links are available
466: as of Windows 2000 and symbolic links as of Windows Vista.
467:
468: - The PDO_OCI php_pdo_oci8.dll library (for use with Oracle version 8 client
469: libraries) is no longer being built. Instead, use php_pdo_oci.dll (note no
470: '8') with Oracle 10 or 11 client libraries. Connection to other database
471: versions is still supported.
472:
473: - For the OCI8 extension, a new library php_oci8_11g.dll is available in
474: addition to php_oci8.dll. Only one can be enabled at any time. Use
475: php_oci8.dll with Oracle 10.2 client libraries. Use php_oci8_11g.dll with
476: Oracle 11 client libraries. Connection to other database versions is still
477: supported.
478:
479: - Firebird and SNMP support are no longer available on Windows. Firebird support
480: may be reintroduced in the future.
481:
482: =====================
483: 11.1 New in PHP 5.3.4
484: =====================
485:
486: - open_basedir supports now symbolic links (checks the target).
487: - is_link and SplFileInfo symbolic links related method are now fully supported
488: (on Windows Vista or later).
489:
490: ===================
491: 12. New in PHP 5.3:
492: ===================
493:
494: a. New libraries
495:
496: - mysqlnd is a new core library shipped with PHP. It is a PHP-specific
497: replacement for libmysql and is recommended for all installations for
498: increased performance.
499:
500: b. New extensions
501:
502: - enchant
503: - fileinfo (replaces mime_magic)
504: - intl
505: - Phar
506: - SQLite3
507:
508: c. New stream wrappers
509:
510: - glob:// stream wrapper
511: - phar:// stream wrapper for accessing phar archives
512:
513: d. New stream filters
514:
515: - "dechunk" (HTTP/1.1 chunked transfer encoding)
516: - The bz2.decompress filter now supports concatenation
517:
518: e. New functions
519:
520: - Core: gc_collect_cycles()
521: gc_enabled()
522: gc_enable()
523: gc_disable()
524: class_alias()
525: get_called_class()
526: forward_static_call()
527: forward_static_call_array()
528: str_getcsv()
529: quoted_printable_encode()
530: lcfirst()
531: - Array: array_replace()
532: array_replace_recursive()
533: - Date: date_add()
534: date_sub()
535: date_diff()
536: date_parse_from_format()
537: date_create_from_format()
538: date_get_last_errors()
539: timezone_version_get()
540: - INI: parse_ini_string()
541: - GMP: gmp_testbit()
542: - Hash: hash_copy()
543: - IMAP: imap_gc()
544: imap_utf8_to_mutf7()
545: imap_mutf7_to_utf8()
546: - JSON: json_last_error()
547: - libxml: libxml_disable_entity_loader
548: - MySQLi: mysqli_fetch_all()
549: mysqli_get_connection_stats()
550: mysqli_poll()
551: mysqli_reap_async_query()
552: - Network: gethostname()
553: header_remove()
554: - OpenSSL: openssl_random_pseudo_bytes()
555: - PCNTL: pcntl_signal_dispatch()
556: pcntl_sigprocmask()
557: pcntl_sigwaitinfo()
558: pcntl_sigtimedwait()
559: - PCRE: preg_filter()
560: - SHM: msg_queue_exists()
561: shm_has_var()
562: - Streams: stream_supports_lock()
563: stream_context_set_default()
564: stream_context_get_params()
565: - Userspace stream wrappers:
566: stream_cast()
567: stream_set_options()
568:
569: f. New global constants
570:
571: - Core: E_DEPRECATED
572: E_USER_DEPRECATED
573: __DIR__
574: __NAMESPACE__
575: PHP_MAXPATHLEN
576: PHP_WINDOWS_VERSION_MAJOR
577: PHP_WINDOWS_VERSION_MINOR
578: PHP_WINDOWS_VERSION_BUILD
579: PHP_WINDOWS_VERSION_PLATFORM
580: PHP_WINDOWS_VERSION_SP_MAJOR
581: PHP_WINDOWS_VERSION_SP_MINOR
582: PHP_WINDOWS_VERSION_SUITEMASK
583: PHP_WINDOWS_VERSION_PRODUCTTYPE
584: PHP_WINDOWS_NT_DOMAIN_CONTROLLER
585: PHP_WINDOWS_NT_SERVER
586: PHP_WINDOWS_NT_WORKSTATION
587: - INI: INI_SCANNER_NORMAL
588: INI_SCANNER_RAW
589: - cURL CURLOPT_PROGRESSFUNCTION
590: - GD: IMG_FILTER_PIXELATE
591: - JSON: JSON_ERROR_NONE
592: JSON_ERROR_DEPTH
593: JSON_ERROR_STATE_MISMATCH
594: JSON_ERROR_CTRL_CHAR
595: JSON_ERROR_SYNTAX
596: JSON_FORCE_OBJECT
597: JSON_HEX_TAG
598: JSON_HEX_AMP
599: JSON_HEX_APOS
600: JSON_HEX_QUOT
601: - LDAP: LDAP_OPT_NETWORK_TIMEOUT
602: - libxml: LIBXML_LOADED_VERSION
603: - PCRE: PREG_BAD_UTF8_OFFSET_ERROR
604: - PCNTL: SIG_BLOCK
605: SIG_UNBLOCK
606: SIG_SETMASK
607: SI_USER
608: SI_NOINFO
609: SI_KERNEL
610: SI_QUEUE
611: SI_TIMER
612: SI_MESGQ
613: SI_ASYNCIO
614: SI_SIGIO
615: SI_TKILL
616: CLD_EXITED
617: CLD_KILLED
618: CLD_DUMPED
619: CLD_TRAPPED
620: CLD_STOPPED
621: CLD_CONTINUED
622: TRAP_BRKPT
623: TRAP_TRACE
624: POLL_IN
625: POLL_OUT
626: POLL_MSG
627: POLL_ERR
628: POLL_PRI
629: POLL_HUP
630: ILL_ILLOPC
631: ILL_ILLOPN
632: ILL_ILLADR
633: ILL_ILLTRP
634: ILL_PRVOPC
635: ILL_PRVREG
636: ILL_COPROC
637: ILL_BADSTK
638: FPE_INTDIV
639: FPE_INTOVF
640: FPE_FLTDIV
641: FPE_FLTOVF
642: FPE_FLTUND
643: FPE_FLTRES
644: FPE_FLTINV
645: FPE_FLTSUB
646: SEGV_MAPERR
647: SEGV_ACCERR
648: BUS_ADRALN
649: BUS_ADRERR
650: BUS_OBJERR
651:
652: g. New classes
653:
654: - Date: DateInterval
655: DatePeriod
656: - Phar: Phar
657: PharData
658: PharFileInfo
659: PharException
660: - SPL SplDoublyLinkedList
661: SplStack
662: SplQueue
663: SplHeap
664: SplMinHeap
665: SplMaxHeap
666: SplPriorityQueue
667: SplFixedArray
668: FilesystemIterator
669: GlobIterator
670: RecursiveTreeIterator
671: MultipleIterator
672:
673: h. New methods
674:
675: - Date: DateTime::diff()
676: DateTime::add()
677: DateTime::sub()
678: DateTime::createFromFormat()
679: DateTime::getLastErrors()
680: - DOM: DOMNode::getLineNo()
681: - Exception: Exception::getPrevious()
682: - PDO_Firebird: PDO::setAttribute()
683: - Reflection: ReflectionProperty::setAccessible()
684: ReflectionFunction::inNamespace()
685: ReflectionFunction::getNamespaceName()
686: ReflectionFunction::getShortName()
687: ReflectionClass::inNamespace()
688: ReflectionClass::getNamespaceName()
689: ReflectionClass::getShortName()
690: - SPL: DirectoryIterator::getExtension()
691: SplFileInfo::getExtension()
692: SplObjectStorage::addAll()
693: SplObjectStorage::removeAll()
694: - XSL: XSLTProcessor::setProfiling()
695:
696: i. New class constants
697:
698: - PDO_Firebird: PDO::FB_ATTR_DATE_FORMAT
699: PDO::FB_ATTR_TIME_FORMAT
700: PDO::FB_ATTR_TIMESTAMP_FORMAT
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