Sort object(SimpleXMLElement) php

Question

I\'m trying to find a way to sort my array from SimpleXMLElement. I\'d like to sort by start time which I can get from event_start_dt. I\'d also like to sort by room ID as a

Answer 1

Use array_multisort

            foreach ($rez->reservation as $value)
            { 
                     $dateTime[] = $value->event_start_dt;
            }

           array_multisort($dateTime,SORT_ASC,SORT_STRING,$rez->reservation);   
           echo "
";
           print_r($rez->reservation);


Check it. this is my code

 array
                        (
                            'dateTime' => '2013-12-02T10:00:00-08:00',
                            'chanl1' => '20.10',
                            'chanl2' => '45.4',
                            'chanl3' => '',
                        ),

                    1 => array
                        (
                            'dateTime' => '2013-12-02T11:00:00-08:00',
                            'chanl1' => '20.11',
                            'chanl2' => '45.4',
                            'chanl3' => '',
                        ),
                  2 => array
                        (
                            'dateTime' => '2013-12-02T12:00:00-08:00',
                            'chanl1' => '20.12',
                            'chanl2' => '33.8',
                            'chanl3' => '',
                        ),

                    3 => array
                        (
                            'dateTime' => '2013-12-02T09:00:00-08:00',
                            'chanl1' => '20.9',
                            'chanl2' => '33.9',
                            'chanl3' => ''
                        ));

            foreach($myarray as $c=>$key) {
                    $dateTime[] = $key['dateTime'];                      
            }           


        array_multisort($dateTime,SORT_ASC,SORT_STRING,$myarray);   
        echo "
";
        print_r($myarray);
        ?>


Output is : 

Array
(
    [0] => Array
        (
            [dateTime] => 2013-12-02T09:00:00-08:00
            [chanl1] => 20.9
            [chanl2] => 33.9
            [chanl3] => 
        )

    [1] => Array
        (
            [dateTime] => 2013-12-02T10:00:00-08:00
            [chanl1] => 20.10
            [chanl2] => 45.4
            [chanl3] => 
        )

    [2] => Array
        (
            [dateTime] => 2013-12-02T11:00:00-08:00
            [chanl1] => 20.11
            [chanl2] => 45.4
            [chanl3] => 
        )

    [3] => Array
        (
            [dateTime] => 2013-12-02T12:00:00-08:00
            [chanl1] => 20.12
            [chanl2] => 33.8
            [chanl3] => 
        )

)


FIDDLE