Filter returning empty array?

Filter returning empty array?

References

Reference NO 1

http://php.net/manual/en/function.array-filter.php

Reference NO 2

http://stackoverflow.com/questions/15186234/filter-returning-empty-array

Reference NO 3

http://stackoverflow.com/questions/3654295/remove-empty-array-elements

Reference NO 4

http://stackoverflow.com/questions/9568044/php-remove-empty-null-array-key-values-while-keeping-key-values-otherwise-not-e

Reference NO 5

http://stackoverflow.com/questions/8328983/php-check-if-an-array-is-empty

Reference NO 6

http://mootools.net/docs/core/Types/Array

Reference NO 7

http://hasin.me/2009/09/16/removing-empty-elements-from-an-array-the-php-way/

Reference NO 8

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