PHP 5.5.11 发布了，该版本修复了很多 Bug，包括一些相关库的更新和 CVE-2013-7345 安全问题修复，建议 PHP 5.5 的用户立即升级。
完整改进记录:
Core:
Fixed bug #60602 (proc_open() changes environment array).
Allow zero length comparison in substr_compare().
cURL:
Fixed bug #66109 (Can't reset CURLOPT_CUSTOMREQUEST to default behaviour).
Fix compilation on libcurl versions between 7.10.5 and 7.12.2, inclusive.
Fileinfo:
Fixed bug #66946 (fileinfo: extensive backtracking in awk rule regular expression (CVE-2013-7345)).
FPM:
Added clear_env configuration directive to disable clearenv() call.
GD:
Fixed bug #66714 (imageconvolution breakage).
Fixed bug #66869 (Invalid 2nd argument crashes imageaffinematrixget).
Fixed bug #66887 (imagescale - poor quality of scaled image).
Fixed bug #66890 (imagescale segfault).
Fixed bug #66893 (imagescale ignore method argument).
GMP:
Fixed bug #66872 (invalid argument crashes gmp_testbit).
Hash:
hash_pbkdf2() now works correctly if the $length argument is not specified.
Intl:
Fixed bug #66873 A reproductible crash in UConverter when given invalid encoding.
Mail:
Fixed bug #66535 (Don't add newline after X-PHP-Originating-Script).
MySQLi:
Fixed bug #66762 (Segfault in mysqli_stmt::bind_result() when link closed).
OPCache:
Added function opcache_is_script_cached().
Added information about interned strings usage.
Openssl:
Fixed bug #66833 (Default disgest algo is still MD5, switch to SHA1).
SQLite:
Updated bundled libsqlite to 3.8.3.1.
SPL:
Added feature #65545 (SplFileObject::fread()).
项目主页：http://www.php.net/
下载地址：http://www.php.net/downloads.php
来自:开源中国社区
