Sorting an array with DateTime strings?

Question

How can i sort efficiently this array (recent items first) on end_time value in PHP?

array
  0 => 
    array
      \'value\' => int 4
             


        

Answer 1

Have you looked at the usortDocs function? It lets you define a callback function to compare two values. So I'm suggesting something along these lines:

function compare_func($a, $b)
{
    // CONVERT $a AND $b to DATE AND TIME using strtotime() function
    $t1 = strtotime($a["end_time"]);
    $t2 = strtotime($b["end_time"]);

    return ($t2 - $t1);
}

usort(main_array, "compare_func");