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PHP Sort a multidimensional array by element containing date
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Use usort() and a custom comparison function:
function date_compare($a, $b)
{
$t1 = strtotime($a['datetime']);
$t2 = strtotime($b['datetime']);
return $t1 - $t2;
}
usort($array, 'date_compare');
EDIT: Your data is organized in an array of arrays. To better distinguish those, le...
The modulo operation on negative numbers in Python
I've found some strange behaviour in Python regarding negative numbers:
8 Answers
8
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Use dynamic (variable) string as regex pattern in JavaScript
I want to add a (variable) tag to values with regex, the pattern works fine with PHP but I have troubles implementing it into JavaScript.
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jQuery animate backgroundColor
I am trying to animate a change in backgroundColor using jQuery on mouseover.
17 Answers
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Java HashMap performance optimization / alternative
I want to create a large HashMap but the put() performance is not good enough. Any ideas?
25 Answers
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What's the purpose of git-mv?
...ame newname
git add newname
git rm oldname
i.e. it updates the index for both old and new paths automatically.
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Algorithm to return all combinations of k elements from n
...to write a function that takes an array of letters as an argument and a number of those letters to select.
71 Answers
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Converting RGB to grayscale/intensity
When converting from RGB to grayscale, it is said that specific weights to channels R, G, and B ought to be applied. These weights are: 0.2989, 0.5870, 0.1140.
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Convert nested Python dict to object?
I'm searching for an elegant way to get data using attribute access on a dict with some nested dicts and lists (i.e. javascript-style object syntax).
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Add custom messages in assert?
Is there a way to add or edit the message thrown by assert? I'd like to use something like
8 Answers
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