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<?php $data = [ ['time_diff' => 178], ['time_diff' => 41], ['time_diff' => 83] ]; usort($data, function ($a, $b) { $a['date_diff'] < $b['date_diff']; }); print_r($data);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined array key "date_diff" in /in/ceN4O on line 10 Warning: Undefined array key "date_diff" in /in/ceN4O on line 10 Warning: Undefined array key "date_diff" in /in/ceN4O on line 10 Warning: Undefined array key "date_diff" in /in/ceN4O on line 10 Array ( [0] => Array ( [time_diff] => 178 ) [1] => Array ( [time_diff] => 41 ) [2] => Array ( [time_diff] => 83 ) )

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