PHP uasort() Function

PHP Array Reference : Sort the elements of the $arr array by values using a user-defined comparison function

Definition and Usage

The uasort() function sorts an array by values using a user-defined comparison function.

Tip: Use the uksort() function to sort an array by keys using a user-defined comparison function.

uasort(array, myfunction)

Parameter	Description
array	Required. Specifies the array to sort
myfunction	Optional. A string that define a callable comparison function. The comparison function must return an integer <, =, or > than 0 if the first argument is <, =, or > than the second argument

Return Value:	TRUE on success. FALSE on failure
PHP Version:	4+

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