PHP 发布了 5.5.0 的首个 Beta 版本，包括如下改进：
Added Zend Opcache extension (but disabled by ini setting),
Added array_column function which returns a column in a multidimensional array,
Added support for non-scalar Iterator keys in foreach,
Added support for changing the process's title in CLI/CLI-Server SAPIs
项目主页：https://github.com/php/php-src/blob/php-5.5.0beta1/NEWS
下载地址：http://downloads.php.net/dsp
来自:开源中国社区
