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php6介绍和php6安装手册-PHP6下载

May 19, 2016 pm 02:05 PM

php6下载:http://snaps.php.net/

PHP6安装手册:

第一步:将apache安装到c:/apache下,装完后可在浏览器中输入http://localhost查看是否成功运行了!如果运行错误,80%以上的可能是由于端口问题,请修改c:/apache/conf/httpd.conf中的Listen和ServerName这2个配置为其他未占用的端口!

第二步:将php6解包到c:/php下,然后将c:/php/php.ini-recommended 复制成 c:/php/php.ini ,或者直接改名也可!然后请正确配置php.ini,尤其要注意extension_dir参数,将其改为 "c:/php/ext/"。

第三步:配置c:/apache/conf/httpd.conf。在文件最后加上以下内容:

LoadFile "c:/php/libMySQL.dll"
LoadModule php5_module "c:/php/php6apache2_2.dll"
AddType application/x-httpd-php .php
PHPIniDir "C:/php"

其中要注意的是LoadModule参数中应该是 php5_module 而不是 php6_module。
LoadFile "c:/php/libmysql.dll" 的目的是为了让PHP支持php_mysql.dll扩展

最后保存,重起APACHE就可以运行PHP了!

PHP6介绍:

去年在巴黎举行的PHP开发者大会中,PHP6开发的消息开始流传开来,
于PHP大会讨论的PHP6,将有很大幅度的变化,但这只是草案阶段,
并不代表所有会议的机率都会随着PHP6的发布而包含记录中所有的变更
也就是说,在发布PHP6之前,还是会有异动的情形,但是可以确定的是
下面所列的数项变化,将会随着PHP6一同面世(当然不是百分百乐,)
赶快来看看这些新特性吧

1.支持Unicode
支持Unicode是有其必然,虽然Unicode占用较多的空间,但Unicode带来
的便利性,远超过占用空间的缺点,尤其在国际化的今天,硬件设备越来
越强大,网速也大幅度的提升,这么一点小小的缺点是可以忽略的。另外
一点,PHP也可以在.ini文件中设定是否开启支持Unicode,决定权在你自己,
这是一个不错的点子,关掉Unicode的支持,PHP的性能并不会有大幅度的
提升,主要的影响在于需要引用字符串的函数。

2.Register Globals 将被移除
这是一个重要的决定,说多新进的PHP开发者会觉得Register Globals满
方便的,但是却忽略了Register Globals会带来程序上安全性的隐患,大
多数的主机上此项功能是关闭的,印象中从PHP4.3.x版开始时,此项默认
设置值即是关闭状态,PHP6正式移除Register Globals也代表着如果程序
是由PHP3时代的产物,将完全无法使用,除了改写一途外,别无他法。相
信现在的PHP世界里,仍使用PHP3时代所产生的程序应该是少之又少。

3.Magic Quotes 将消失
Magic Quotes主要是自动转义需要转义的字符,此项功能移除叶符合大多
数PHP开发者的心声。

4.Safe Mode 取消
老实说,这个模式不知道哪里不好,取消就取消吧,反正也用不到

5.’var’ 别名为 ‘public’
在类中的var声明变成public的别名,相信是为了兼容PHP5而作的决定,
PHP6现在也可以称作为OO语言了。

6.通过引用返回将出错
现在透过引用返回编译器将会报错 例如$a =& new b()、function &c(),
OO语言默认就是引用,所以不需要再使用&了。

7.zend.ze1 compatbility mode 将被移去
Zend.ze1相容模式将被移去,PHP5是为兼容旧有PHP4,所以在.ini中可选择是否
开启相容模式,原因在于PHP5使用的是第二代解析引擎,但是相容模式并不是百
分之百能解析PHP4语法,所以旧时代的产物,移除。

8.Freetype 1 and GD 1 support 将不见
这两个是很久的Libs,所以不再支持,GD1早已被现在的GD2取代了。

9.dl() 被移到 SAPI 中
dl()主要是让设计师加载extension Libs,现在被移到 SAPI 中

10.Register Long Array 去除
从PHP5起默认是关闭,再PHP6中正式移除。

11.一些Extension的变更
例如 xmlReader 和 XMLWriter 将不再是以Extension的方式出现,他们将被移入
到PHP的核心之中,并且默认是开启,ereg extension将被放入PECL,代表着它将
被移出PHP核心,这也是为了让路给新的正则表达式extension,
此外,Fileinfo extension 也将被导入PHP的核心之中。

12.APC将被导入核心
这是一个提高PHP性能的功能,现在它将被放入PHP核心中,并且可以选择是否启用APC

13.告别asp风格的起始标签
原来是为了取悦ASP开发者转向使用PHP,现今已经不再需要这种做法了,

最后,别期望PHP6的性能可以全面超过PHP5,有可能的是PHP6的执行效率会比
PHP5还要来的慢的,但是可以预期的是,PHP开发小组将会努力的完善PHP5,超
越PHP5。
那么,对PHP6有兴趣的朋友现在可以到PHP官方网站上下载,试试这些功能是否真的已经
在PHP6中体现出来了,下载地址http://snaps.php.net/

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