Online PHP editor | refs for fNOB1

<?php $xml=simplexml_load_string(<<<XML <?xml version="1.0"?> <calender> <item> <date>20140113</date> <title>My Birthday</title> </item> <item> <date>20140112</date> <title>test</title> </item> <item> <date>20130114</date> <title>test</title> </item> </calender> XML ); $arr=array(); foreach($xml->item 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); } echo $xml->asXML();