fanhypermax

<?php
$dom_xml = new domDocument();
$xml= <<<XML
<car>
   <model>volvo</model>
   <model>Lada</model>
   <fdsdf>Lada</fdsdf>
   <qwqw>Lada</qwqw>
   <model>Lada</model>
   <fdsdfsdfs>Lada</fdsdfsdfs>
   <sd>ASD</sd>
   <bv>213</bv>
</car>
XML;
$dom_xml->LoadXml($xml);
$dom_xml->formatOutput = TRUE;
$car = $dom_xml->getElementsByTagName("car")->item(0);
$car_childs = $car->childNodes;
$dom_items = $dom_xml->createElement('items');

foreach($car_childs as $mod){
	if($mod->tagName != null){
		$dom_element = $dom_xml->createElement($mod->tagName, $mod->nodeValue);
		$dom_items ->appendChild($dom_element);		
	}
}
$dom_xml ->appendChild($dom_items );
//удаляем узел car
//$dom_xml->removeChild($car);
$xml= $dom_xml->save('new.xml')

<?xml version="1.0"?>
<car>
   <model>volvo</model>
   <model>Lada</model>
   <fdsdf>Lada</fdsdf>
   <qwqw>Lada</qwqw>
   <model>Lada</model>
   <fdsdfsdfs>Lada</fdsdfsdfs>
   <sd>ASD</sd>
   <bv>213</bv>
</car>
<items>
  <model>volvo</model>
  <model>Lada</model>
  <fdsdf>Lada</fdsdf>
  <qwqw>Lada</qwqw>
  <model>Lada</model>
  <fdsdfsdfs>Lada</fdsdfsdfs>
  <sd>ASD</sd>
  <bv>213</bv>
</items>

const obj = arr.reduce((max, n) => {
  const val = Object.values(n)[0];
  return val > max[1] ? [ n, val ] : max;
}, [ null, -Infinity ])[0];

const arr = [6,4,4.5,3.5,5.5,3,6.5];

const middle = [...arr].sort((a, b) => a - b)[arr.length / 2 | 0];

var nowtime = "17:00"
var oldtime = "19:00"

function extractTime(str){
	const [h, m] = str.split(':').map(v => +v)
    const d = new Date();
    d.setHours(h);
    d.setMinutes(m);
    d.setSeconds(0);
    return d.getTime();
}

extractTime(nowtime)-extractTime(oldtime);

var nowtime = "19:00"
var oldtime = "17:00"

<?php

$arr1 = array('Запись 1',
             'Запись 7',
             'Запись 2',
             'Запись 3',
             'Запись 1',
             'Запись 4',
             'Запись 5',
             'Запись 2',
             'Запись 6',
             'Запись 7'
             );

$arr2 = array_unique($arr1);

$arr3 = array_unique(array_diff_assoc($arr1,$arr2));

stop: for (var i = 0; i < arr.length; i++) {
    for (var n = 0; n < arr[i].length; n++) {

        if (n == 0) {
            alert(i);
            break stop;
        }

    }
}

function search( search, subject, before) {
  var limit = subject.indexOf( before);
  if( limit == -1) return -1;
  return subject.substr(0, limit).indexOf( search);
}

search( 'строка 2', 'строка 1 строка 2 строка 3 строка 4',  'строка 3') // 9