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uasort

(PHP 3>= 3.0.4, PHP 4 , PHP 5)

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

Description

bool uasort ( array array, callback cmp_function)

This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant. The comparison function is user-defined.

Note: This function assigns new keys for the elements in array. It will remove any existing keys you may have assigned, rather than just reordering the keys.

Returns TRUE on success or FALSE on failure.

Note: Please see usort() and uksort() for examples of user-defined comparison functions.

See also usort(), uksort(), sort(), asort(), arsort(), ksort() and rsort().