DomDocument 和 cURL 不返回更新的值

Question

PHP 脚本

<?php
 error_reporting(E_all);
 ini_set('display_errors', 1);


 $ch = curl_init();

 curl_setopt($ch, CURLOPT_URL, 'http://www.gloryfeed.com/scale405.html');

 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

 curl_setopt($ch, CURLOPT_HEADER, 0);

 $output = curl_exec($ch);

 if($output == FALSE){
   echo "cURL Error: " . curl_error($ch);
 }

 $dom = new DOMDocument();
 $dom->loadHTML( $output );
 $test = $dom->saveHTML($dom->getElementById('displayedWeight'));

 //$dom->getElementById('displayedWeight')

 curl_close($ch);

 echo "Your 'Weight' is: " . $test . "\n";

 //print_r($output);
?>

HTML 页数

<div class="weightDisplay" id="displayedWeight">0</div>

这就是我要获取的变量。该页面具有更新 div weightDisplayed 的更新功能。然而，当curl抓取页面并且DomDocument解析数据时，它只是接收到默认值0。有什么办法可以抓取更新后的值吗？

Answer 1

这会将信息放入一个数组中；

<?php
error_reporting(E_all);
ini_set('display_errors', 1);

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'http://www.gloryfeed.com/get_var.cgi?index=99');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);

$output = curl_exec($ch);

if($output == FALSE){
  echo "cURL Error: " . curl_error($ch);
}

$test = json_decode($output,true);
print_r($test);
echo('<br>');
$test = explode('|',$test['value']);
print_r($test);

DomDocument 和 cURL 不返回更新的值

DomDocument and cURL not returning updated values

html

php

curl

domdocument