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<?php $arr = [ [ 0 => 1, 1 => 'https://www.facebook.com', 2 => 4 ], [ 0 => 1, 1 => 'https://www.twiiter.com', 2 => 7 ], [ 0 => 1, 1 => 'https://www.instagram.com', 2 => 9 ] ]; array_multisort(array_column($arr, 2), SORT_DESC,$arr); print_r($arr);

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