tpunt/doc.md

## doc.md

      
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    Incompatibilities:


 Session:

 Removed register_globals related code and "!" can be used as $_SESSION key name.
 Session is made to manage session status correctly and prevents invalid operations.
Only inappropriate codes are affected by this change. If you have problems with this,
it means you have problem in your code.

 Functions are made to set or return correct session status.
session_start(), session_status(), session_regenerate_id()
 Functions are made to return bool from null. These functions have void parameter
and void parameter is checked.
session_unset(), session_write_close()/session_commit(), session_abort(),
session_reset()
 Functions prohibit invalid operations with regard to session status and
HTTP header status, returns correct bool return value.
session_start(), session_set_cookie_params(), session_name(), session_module_name(),
session_set_save_handler(), session_regenerate_id(), session_cache_limiter(),
session_cache_expire(), session_unset(), session_destroy(),
session_write_close()/session_commit(), session_reset()
 INI value change by ini_set() returns update status correctly.　Invalid INI modifications
are checked and made to fail.
session.name, session.save_path, session.cookie_lifetime, session.cookie_path,
session.cookie_domain, session.cookie_httponly, session.cookie_secure,
session.use_cookies, session.use_only_cookies, session.use_strict_mode,
session.referer_check, session.cache_limiter, session.cache_expire,
session.lazy_write, session.save_handler, session.serialize_handler,
session.gc_probability, session.gc_divior, session.gc_maxlifetime,
 Some E_ERRORs are changed to E_WARNING since session status is managed correctly.
session_start()
 Session no longer initialize $_SESSION for invalid and useless session.
session_start()
 When headers are already sent and try to set new INI values, session_name(),
session_module_name(), session_save_path(), session_cache_limiter() and
session_cache_expire() are no longer works. Older PHPs accepts new values even
if new values will not be effective.
This new corrected behavior may affect command line mode CLI scripts that manage
sessions. Use output buffer just like web applications to resolve problems on
CLI scripts.


New Features:


 DBA:

 Implemented support for the LMDB backend.


 JSON:

 Added JSON_INVALID_UTF8_IGNORE and JSON_INVALID_UTF8_SUBSTITUTE options for
json_encode() and json_decode() to ignore and replace invalid UTF-8 byte
sequences, respectively.


 OCI8:

 Added Oracle Database Transparent Application Failover (TAF) callback support.


 PCRE:

 Added J modifier for setting PCRE_DUPNAMES.
 Added PREG_UNMATCHED_AS_NULL flag to allow distinguish between unmatched
subpatterns and empty matches by reporting NULL and "" (empty string),
respectively.


 SQLite3:

 Implemented writing to BLOBs.


 Zip:

 read/write encrypted archive, relying on libzip 1.2.0,
using new methods:
ZipArchive::setEncryptionName($name, $method [, $password]);
ZipArchive::setEncryptionIndex($index, $method [, $password]);
and new constants:
ZipArchive::EM_NONE
ZipArchive::EM_AES_128
ZipArchive::EM_AES_192
ZipArchive::EM_AES_256
 accept 'password' from zip stream context
 ZipArchive implements countable, added ZipArchive::count() method.


 mail()/mb_send_mail() accept array $extra_header. Array parameter is checked against RFC 2822.


Other Changes


 Mcrypt:

 The deprecated mcrypt extension has been moved to PECL.
 libmcrypt has not been maintained since 2007 and the continued use of this
extension is strongly discouraged.
 Users are advised to use alternatives such as OpenSSL or libsodium.


 EXIF:

 Added extended exif tag support for the following formats:
Samsung, DJI, Panasonic, Sony, Pentax, Minolta, Sigma/Foveon,
AGFA, Kyocera, Ricoh & Epson.
 exif_read_data() and exif_thumbnail() now supports a passed streams as their
first parameter.


 GD:

 Removed --enable-gd-native-ttf configuration option which was unused as
of PHP 5.5.0 anyway.
 imagegd() stores truecolor images as real truecolor images. Formerly, they
have been converted to palette.
 imageantialias() is now also available if compiled with a system libgd.


 Mbstring

 mb_check_encoding() accepts array parameter. Both key and value
encodings are checked recursively.
 mb_convert_encoding() accepts array parameter. Only value encodings
are converted recursively.


 PDO_OCI:

 The '--with-pdo-oci' configure syntax no longer needs the vesion number of the
Oracle Instant Client.


 pdo_sqlite

 Use sqlite3_prepare_v2() and sqlite3_close_v2() functions instead of their
legacy counterparts.


 Support for VT100 console mode
On systems starting with 10.0.10586, cmd.exe supports ANSI escape sequences.
The corresponding console mode is enabled by default on CLI on suitable
systems. As well, the function sapi_windows_vt100_support() is provided,
to control and query the corresponding information in the scripts.


 Build system
Autoconf minimal version is now 2.64.