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Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...技术细节，其中演示代码如果没有特殊说明，使用的都是PhpRedis扩展来实现的。内...最近忙着用Redis实现一个消息通知系统，今天大概总结了一下技术细节，其中演示代码如果没有特殊说明，使用的都是PhpRedis扩展来实现的。
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jQuery.parseJSON throws “Invalid JSON” error due to escaped single quote in JSON
...hine diagram on the JSON website, only escaped double-quote characters are allowed, not single-quotes. Single quote characters do not need to be escaped:
Update - More information for those that are interested:
Douglas Crockford does not specifically say why the JSON specification does not al...
How to convert an enum type variable to a string?
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There really is no beautiful way of doing this. Just set up an array of strings indexed by the enum.
If you do a lot of output, you can define an operator<< that takes an enum parameter and does the lookup for you.
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Passing an array to a query using a WHERE clause
Given an array of ids $galleries = array(1,2,5) I want to have a SQL query that uses the values of the array in its WHERE clause like:
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What is the _snowman param in Ruby on Rails 3 forms for?
...net Explorer (5, 6, 7 and 8) to encode its parameters as unicode.
Specifically, this bug can be triggered if the user switches the browser's encoding to Latin-1. To understand why a user would decide to do something seemingly so crazy, check out this google search. Once the user has put the web-sit...
Difference between application/x-javascript and text/javascript content types
...itted in HTML 5).
This isn't a problem in HTTP headers as browsers universally (as far as I'm aware) either ignore the HTTP content-type of scripts entirely, or are modern enough to recognise application/javascript.
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date(): It is not safe to rely on the system\'s timezone settings.解决...
...成的,本文提供了3种方法来解决这个问题。
实际上，从PHP 5.1.0开始当对使用date()等函数时，如果timezone设置不正确，在每一次调用时间函数时，都会产生E_NOTICE 或者 E_WARNING 信息，而又在php中，date.timezone这个选项，默认情况下是...
What is the cleanest way to get the progress of JQuery ajax request?
In plain javascript is very simple: need just to attach the callback to {XMLHTTPRequest}.onprogress
6 Answers
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Convert timestamp to readable date/time PHP
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Use PHP's date() function.
Example:
echo date('m/d/Y', 1299446702);
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How to add new column to MYSQL table?
I am trying to add a new column to my MYSQL table using PHP. I am unsure how to alter my table so that the new column is created. In my assessment table I have:
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