7.2.0 beta1 发布了。PHP（PHP：Hypertext
Preprocessor）是一种在电脑上执行的脚本语言，主要是用途在于处理动态网页，也包含了命令列执行接口（command line
interface），或者产生图形使用者接口（GUI）程式。改进日志如下： 20 Jul 2017, PHP 7.2.0beta1
- Core:
. Added new VM instuctions ISSET_ISEMPTY_CV and UNSET_CV. Previously they
were implemented as ISSET_ISEMPTY_VAR and UNSET_VAR variants with
ZEND_QUICK_SET flag. (Nikita, Dmitry)
. Fixed bug #74603 (PHP INI Parsing Stack Buffer Overflow Vulnerability).
(Stas)
. Fixed bug #74111 (Heap buffer overread (READ: 1) finish_nested_data from
unserialize). (Nikita)
. Fixed bug #74819 (wddx_deserialize() heap out-of-bound read via
php_parse_date()). (Derick)
. Fixed bug #49649 (unserialize() doesn't handle changes in property
visibility). (pmmaga)
. Fixed #74866 (extension_dir = "./ext" now use current directory for base).
(Francois Laupretre)
. Fixed bug #74923 (Crash when crawling through network share). (Anatol)
. Fixed bug #74913 (fixed incorrect poll.h include). (petk)
. Fixed bug #74906 (fixed incorrect errno.h include). (petk)
- Date:
. Fixed bug #74852 (property_exists returns true on unknown DateInterval
property). (jhdxr)
- DOM:
. Implement #74837 (Implement Countable for DomNodeList and DOMNamedNodeMap).
(Andreas Treichel)
- EXIF:
. Implemented #65187 (exif_read_data/thumbnail: add support for stream
resource). (Kalle)
. Deprecated the read_exif_data() alias. (Kalle)
. Fixed bug #74428 (exif_read_data(): "Illegal IFD size" warning occurs with
correct exif format). (bradpiccho at gmail dot com, Kalle)
. Fixed bug #72819 (EXIF thumbnails not read anymore). (Kalle)
. Fixed bug #62523 (php crashes with segfault when exif_read_data called).
(Kalle)
. Fixed bug #50660 (exif_read_data(): Illegal IFD offset (works fine with
other exif readers). (skinny dot bravo at gmail dot com, Kalle)
- GD:
. Fixed bug #74435 (Buffer over-read into uninitialized memory). (cmb)
- IMAP:
. Fixed bug #72324 (imap_mailboxmsginfo() return wrong size).
(ronaldpoon at udomain dot com dot hk, Kalle)
- JSON:
. Add JSON_INVALID_UTF8_IGNORE and JSON_INVALID_UTF8_SUBSTITUTE options for
json_encode and json_decode to ignore or replace invalid UTF-8 byte
sequences - it addresses request #65082. (Jakub Zelenka)
- LDAP:
. Fixed passing an empty array to ldap_set_option for client or server controls.
- Opcache:
. Added global optimisation passes based on data flow analysis using Single
Static Assignment (SSA) form: Sparse Conditional Constant Propagation (SCCP),
Dead Code Elimination (DCE), and removal of unused local variables
(Nikita, Dmitry)
- OpenSSL:
. Add ssl security_level stream option to support OpenSSL security levels.
(Jakub Zelenka).
. Allow setting SNI cert and private key in separate files. (Jakub Zelenka)
. Fixed bug #74651 (negative-size-param (-1) in memcpy in zif_openssl_seal()).
(Stas)
- PCRE:
. Fixed bug #74873 (Minor BC break: PCRE_JIT changes output of preg_match()).
(Dmitry)
- Sodium:
. New cryptographic extension
- SQLite3:
. Fixed bug #74883 (SQLite3::__construct() produces "out of memory" exception
with invalid flags). (Anatol)
- ZIP:
. ZipArchive implements countable, added ZipArchive::count() method. (Remi)
. Fix segfault in php_stream_context_get_option call. (Remi) 下载：https://downloads.php.net/~pollita/ | 
