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致PHP路上的“年轻人” - PHP - 清泛IT社区，为创新赋能！
...我们分别看看这两类项目。复杂的项目。类似与内部的CMS系统、CRM系统等等，业务繁琐、数据流混杂、耦合的模块较多，这类项目复杂繁琐，适合PHP新人快速熟悉业务、快速实现子环节功能，对接多个模块练就一身把多个数据源...
What is the difference between task and thread?
...
A task is something you want done.
A thread is one of the many possible workers which performs that task.
In .NET 4.0 terms, a Task represents an asynchronous operation. Thread(s) are used to complete that operation by breaking the work up into chunks and assigning to separate threads.
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How to detect online/offline event cross-browser?
...er vendors update the navigator.onLine flag when actual network access is lost, others don't.
From the spec:
Returns false if the user agent is
definitely offline (disconnected from
the network). Returns true if the user
agent might be online.
The events online and offline are
fired when the value ...
Installing Apple's Network Link Conditioner Tool
... Just double-click the Network Link Conditioner.prefpane and OS X will install it for you. (System Preferences will pop up and ask you about it.)
– Kurt Revis
May 11 '12 at 3:52
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What is the difference between SQL, PL-SQL and T-SQL?
...guage to operate on sets.
It is more or less standardized, and used by almost all relational database management systems: SQL Server, Oracle, MySQL, PostgreSQL, DB2, Informix, etc.
PL/SQL is a proprietary procedural language used by Oracle
PL/pgSQL is a procedural language used by PostgreSQL
TSQL i...
Browser detection in JavaScript? [duplicate]
...F 3's issue with not sending the Content-Length header for read-only AJAX POST messages), feature support just doesn't cut it.
– Cobra
Jun 12 '13 at 16:04
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What is the best way to programmatically detect porn images? [closed]
...ones - and porn images tend to have a lot of skin. This will create false positives but if this is a problem you can pass images so detected through actual moderation. This not only greatly reduces the the work for moderators but also gives you lots of free porn. It's win-win.
#!python
import o...
How to prevent SIGPIPEs (or handle them properly)
...use signal handlers in C have many restrictions on what they can do.
The most portable way to do this is to set the SIGPIPE handler to SIG_IGN. This will prevent any socket or pipe write from causing a SIGPIPE signal.
To ignore the SIGPIPE signal, use the following code:
signal(SIGPIPE, SIG_IGN)...
When do I use the PHP constant “PHP_EOL”?
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Yes, PHP_EOL is ostensibly used to find the newline character in a cross-platform-compatible way, so it handles DOS/Unix issues.
Note that PHP_EOL represents the endline character for the current system. For instance, it will not find a Win...
Sphinx autodoc is not automatic enough
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Where are you supposed to output the files to? I tried outputting them to Sphinx's default _build folder, but running sphinx-build -b html . ./_build doesn't pick them up.
– Cerin
Jan 6 '11 at 18:13
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