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How to calculate the bounding box for a given lat/lng location?
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Here is a PHP implementation from the specification found at JanMatuschek.de: github.com/anthonymartin/GeoLocation.class.php
– Anthony Martin
Dec 3 '12 at 14:10
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Can an Option in a Select tag carry multiple values?
... options in a HTML form:
(the data will be collected and processed using PHP)
15 Answers
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Redis 的性能幻想与残酷现实 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...态数据
临时缓存数据
后台统计用的流水数据
导致的问题就是当你想扩分片的时候，客户端 Hash 映射就变了，这是要迁移数据的。而所有数据放在一组 Redis 里，要把它们分开就麻烦了，每个 Redis 实例里面都是千万级的 key。
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闲扯Nginx的accept_mutex配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...新连接，其它的Worker会重新进入休眠状态，这就是「惊群问题」。
Nginx缺省激活了accept_mutex，也就是说不会有惊群问题，但真的有那么严重么？实际上Nginx作者Igor Sysoev曾经给过相关的解释：
OS may wake all processes waiting on accept(...
Cookies on localhost with explicit domain
...ting it to "" or NULL or FALSE instead of "localhost" is not enough.
For PHP, see comments on http://php.net/manual/en/function.setcookie.php#73107.
If working with the Java Servlet API, don't call the cookie.setDomain("...") method at all.
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How to destroy an object?
...It will stay there, however if you unset the object and your script pushes PHP to the memory limits the objects not needed will be garbage collected. I would go with unset() (as opposed to setting it to null) as it seems to have better performance (not tested but documented on one of the comments fr...
拉里佩奇23条箴言帮你度过创业低谷 - 资讯 - 清泛网 - 专注C/C++及内核技术
...事物一直在改变，如果你的事业是稳定的，那你可能是有问题的。
编者注：或许你不知道拉里·佩奇，但一定知道谷歌。他说“你可能觉得谷歌很好用，但我仍觉得它烂透了。”你永远不会相信，就是这个人，一手缔造了谷歌...
Fatal error: Class 'SoapClient' not found
... service example and I get this error even though I uncommented extension=php_soap.dll in the php.ini file:
11 Answers
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MySQL: determine which database is selected?
... currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected").
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Mixing a PHP variable with a string literal
...ake a look to the Variable parsing - Complex (curly) syntax section of the PHP manual.
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