php文档更新
php.net最近更新了php文档，比较有用的是新增的pman工具。pman是一个命令行小工具，方便查看php函数的本地帮助文档，但是不包含php.net的评论数据。简单的试用心得如下:
安装pman
使用传说中的pear来安装pman
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sudo pear install doc.php.net/pman
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如果pear版本比较老，需要先升级pear才可以继续
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sudo pear upgrade pear
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pman使用方法
pman的使用方法很傻瓜，比如我们想查看strlen的帮助信息:
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pman strlen
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帮助文本的内容是彩色的，能和chm版本的php帮助文档媲美。pman的详细使用帮助如下
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#pman --help man, version 1.6c usage: man [-adfhktwW] [section] [-M path] [-P pager] [-S list] [-m system] [-p string] name ... a : find all matching entries c : do not use cat file d : print gobs of debugging information D : as for -d, but also display the pages f : same as whatis(1) h : print this help message k : same as apropos(1) K : search for a string in all pages t : use troff to format pages for printing w : print location of man page(s) that would be displayed (if no name given: print directories that would be searched) W : as for -w, but display filenames only C file : use `file as configuration file M path : set search path for manual pages to `path P pager : use program `pager to display pages S list : colon separated section list m system : search for alternate systems man pages p string : string tells which preprocessors to run e - [n]eqn(1) p - pic(1) t - tbl(1) g - grap(1) r - refer(1) v - vgrind(1)
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还有一个好处是在vim里查看php帮助信息更方便了，结合完美
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:!pman strlen
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