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Programming PHP, 3rd Edition by Peter MacIntyre, Kevin Tatroe, Rasmus Lerdorf

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Name

uksort

Synopsis

bool uksort(array array, callable function)

Sorts an array by keys using a user-defined function, maintaining the keys for the values. See Chapter 5 and usort() for more information on using this function. Returns true if the array was successfully sorted, or false otherwise.

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