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In Python 2.4+, you should sort items by a "key" associated with each element. You provide a function which computes the key for each element.
def uasort(d, keyfunc): return sorted(d.items(), key=lambda x: keyfunc(x[1])) In Python 2.x, you could also use a comparator function, but this feature has been removed in Python 3, and so should no longer be used: def uasort(d, cmpfunc): return sorted(d.items(), key=lambda x: x[1] cmp=cmpfunc) uasort(PHP 4, PHP 5) uasort — Sort an array with a user-defined comparison function and maintain index association DescriptionThis function sorts an array such that array indices maintain their correlation with the array elements they are associated with, using a user-defined comparison function. This is used mainly when sorting associative arrays where the actual element order is significant. Parameters
Return ValuesReturns TRUE on success or FALSE on failure. Examples
Example #1 Basic uasort() example
<?php The above example will output: Array ( [a] => 4 [b] => 8 [c] => -1 [d] => -9 [e] => 2 [f] => 5 [g] => 3 [h] => -4 ) Array ( [d] => -9 [h] => -4 [c] => -1 [e] => 2 [g] => 3 [a] => 4 [f] => 5 [b] => 8 )
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