PHP Sort XML Elements by Date

Question

Below is my XML file

00/00/0000

         


        

Answer 1

Your array is fine. The next thing you need is usort:

$xml=simplexml_load_string(<<



00/00/0000

Today is my birthday!



04/08/2013

swdefswde



04/02/2013

test



04/01/2013

wefwef



04/03/2013

ssdvs



XML
);
$arr=array();
foreach($xml->task as $aTask)
{
    $arr[]=$aTask;
}
//print_r($arr);
/* uncomment the above line to debug */
usort($arr,function($a,$b){
    return strtotime($a->date)-strtotime($b->date);
});
//print_r($arr);
/* uncomment the above line to debug */
$xml=simplexml_load_string(<<


XML
);
foreach($arr as $aTask)
{
    $tTask=$xml->addChild($aTask->getName());
    $tTask->addChild($aTask->date->getName(),(string)$aTask->date);
    $tTask->addChild($aTask->title->getName(),(string)$aTask->title);
    $tTask->addChild($aTask->description->getName(),(string)$aTask->description);
}
echo $xml->asXML();

The echoed XML (manually formatting to make it look nicer):

00/00/0000

Today is my birthday!



04/01/2013

wefwef



04/02/2013

test



04/03/2013

ssdvs



04/08/2013

swdefswde

Requires PHP >= 5.3

Live demo