domdocument.php

<?php
$count=0;
$url="http://php.net/iterator_to_array";
$html = file_get_contents($url);
$dom = new DOMDocument;
$dom->loadHTML($html);
//$dom->preserveWhiteSpace = false;
$images = $dom->getElementsByTagName('img');
$array = [];
foreach($images as $image){
    $array[]['src'] = $image->getAttribute('src');
}
die(var_dump($array));
foreach ($images as $image) {
    $image->getAttribute('src');
    $count++;
if($count==5)
    break;
}
$arr=array();
foreach ($image as $arr){
    echo $arr;
}
$arrlen = count($arr);
echo $arrlen;
for($x = 0; $x < $arrlen; $x++) {
    echo $arr[$x];
    echo "<br>";
}