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uasort()

uasort - Sort an array with a user-defined comparison function and maintain index association

Syntax

bool uasort (array &$array, callback $cmp_function)

Arguments

  • array - The input array.
  • cmp_function - See usort() and uksort() for examples of user-defined comparison functions.

Description

This 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.

Version

PHP 4, 5

Return value

Returns TRUE on success or FALSE on failure.