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How to benchmark efficiency of PHP script
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If you actually want to benchmark real world code, use tools like Xdebug and XHProf.
Xdebug is great for when you're working in dev/staging, and XHProf is a great tool for production and it's safe to run it there (as long as you read t...
in_array() and multidimensional array
...sive (hence the _r, analogous to print_r(), for example). It descends into all nested arrays to search for the value until there are no more arrays to be found. This way, you can search through arrays of arbitrary complexity instead of just two levels deep.
– jwueller
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Absolute vs relative URLs
...ed Jan 5 '10 at 9:33
Daniel VassalloDaniel Vassallo
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How to fix getImageData() error The canvas has been tainted by cross-origin data?
...the remote server sets the following header appropriately:
Access-Control-Allow-Origin "*"
The Dropbox file chooser when using the "direct link" option is a great example of this. I use it on oddprints.com to hoover up images from the remote dropbox image url, into my canvas, and then submit the ...
How to round up a number to nearest 10?
...$input / 10) * 10;
Edit: I've been doing it this way for so long.. but TallGreenTree's answer is cleaner.
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Download File to server from URL
Well, this one seems quite simple, and it is. All you have to do to download a file to your server is:
10 Answers
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How to check for null in Twig?
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In addition, unlike the PHP isset() function, is defined will return true if a variable is defined and it's value is null.
– Pavel Petrov
Sep 19 '17 at 7:59
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check if jquery has been loaded, then load it if false
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I believe appending a script tag to body works in all browsers.
– Steven Lu
Jan 6 '13 at 21:26
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“Adobe Flash Player因过期而遭到阻止”的内幕起因和解决办法 - 更多技术 ...
...情况。随后我尝试电脑里第二浏览器maxthon时并未出现此问题，此时，我大概猜到是怎么回事了……
◆起因
大家先听我慢慢道来，这跟前不久我们跟踪报道的Hacking Team（以下简称HT）400GB内部资料泄露事件有莫大联系。如果说...
推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...单，而且很多时候推荐也是很准确的。然而它也存在一些问题：
依赖于准确的用户评分；
在计算的过程中，那些大热的物品会有更大的几率被推荐给用户；
冷启动问题。当有一名新用户或者新物品进入系统时，推荐将无从依...