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What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
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First of all, never use a for in loop to enumerate over an array. Never. Use good old for(var i = 0; i<arr.length; i++).
The reason behind this is the following: each object in JavaScript has a special field called prototype. Ever...
How does the algorithm to color the song list in iTunes 11 work? [closed]
...y discovered that the built-in Mathematica function DominantColors doesn't allow enough fine-grained control to approximate the algorithm that iTunes uses. I wrote my own function instead...
A simple method to calculate the dominant color in a group of pixels is to collect all pixels into buckets ...
为什么说自媒体到了最危险的时期？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...最主要的几点包括盈利模式，与科技自媒体作者的关系等问题。是非对错暂且不论，在这场争论中，不管是支持的，还是反对甚至泼脏水的，各有各的观点。很多人认真的或若有其事的分析着虎嗅的招股书，有人甚至说虎嗅已经...
How do I list all cron jobs for all users?
Is there a command or an existing script that will let me view all of a *NIX system's scheduled cron jobs at once? I'd like it to include all of the user crontabs, as well as /etc/crontab , and whatever's in /etc/cron.d . It would also be nice to see the specific commands run by run-parts in /e...
How to create cron job using PHP?
...syntax of scheduling a new job may seem daunting at first glance, it's actually relatively simple to understand once you break it down. A cron job will always have five columns each of which represent a chronological 'operator' followed by the full path and command to execute:
* * * * * home/path/t...
Increment value in mysql update query
...lever for someone who knows what PDO is, but for me who's just diving into PHP/MySQL, it doesn't really shine a lot of light into the matter. Does PDO make that code smaller or more elegant? If so, please edit the answer or post one of your own where you show how it's better with PDO. Thanks.
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How to select multiple files with ?
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<form enctype='multipart/form-data' method='POST' action='submitFormTo.php'>
<input type='file' name='files[]' multiple />
<button type='submit'>Submit</button>
</form>
Make sure you have the enctype='multipart/form-data' attribute in your <form> tag, ...
Can you “compile” PHP code and upload a binary-ish file, which will just be run by the byte code int
...depends on your host, but if I had to guess, I'd guess many hosts wouldn't allow it.
– Frank Farmer
May 21 '13 at 0:39
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PHP 5 disable strict standards error
...isable error reporting, or just prevent the user from seeing it? It’s usually a good idea to log errors, even on a production site.
# in your PHP code:
ini_set('display_errors', '0'); # don't show any errors...
error_reporting(E_ALL | E_STRICT); # ...but do log them
They will be logged to ...
How do I check if a directory exists? “is_dir”, “file_exists” or both?
...post input and uses it as-is, plus makes 0777 dir, prolly not that safe at all ;P
– sEver
Aug 20 '13 at 16:45
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