Online PHP editor | refs for ODLNJ

<?php $xml=simplexml_load_string(<<<XML <?xml version="1.0"?> <calender> <task> <date>00/00/0000</date> <title>My Birthday</title> <description>Today is my birthday!</description> </task> <task> <date>04/08/2013</date> <title>test</title> <description>swdefswde</description> </task> <task> <date>04/02/2013</date> <title>test</title> <description>test</description> </task> <task> <date>04/01/2013</date> <title>egfwe</title> <description>wefwef</description> </task> <task> <date>04/03/2013</date> <title>ssdv</title> <description>ssdvs</description> </task> </calender> XML ); $arr=array(); foreach($xml->task as $aTask) { $arr[]=$aTask; } //print_r($arr); usort($arr,function($a,$b){ return strtotime($a->date)-strtotime($b->date); }); //print_r($arr); $xml=simplexml_load_string(<<<XML <?xml version="1.0"?> <calender> </calender> XML ); foreach($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();