卷曲，没有获取页面源代码

In this script curl is working fine. $output has the page but when I try to echo its source code it displays nothing. I think it has something to do with page headers. Any help!!

header('content-type:text/plain');
$ch = curl_init();
$url = "https://www.amazon.com/gp/css/shiptrack/view.html/ref=TE_SIMP_typ?ie=UTF8&addressID=olqnkqjstjp&latestArrivalDate=1483848000&orderID=103-0753412-5410653&shipmentDate=1483706902&orderingShipmentId=4160817392100&packageId=1";
curl_setopt($ch, CURLOPT_URL, $url); 
curl_setopt($ch, CURLOPT_HEADER, false);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_BINARYTRANSFER, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_MAXREDIRS, 1);
$output = curl_exec($ch);
curl_close($ch);
echo $output;

I have modified your code.. Try this.

Remove
header('content-type:text/plain');

and replace your code with mine.

$ch = curl_init();
$url = "https://www.amazon.com/gp/css/shiptrack/view.html/ref=TE_SIMP_typ?ie=UTF8&addressID=olqnkqjstjp&latestArrivalDate=1483848000&orderID=103-0753412-5410653&shipmentDate=1483706902&orderingShipmentId=4160817392100&packageId=1";
curl_setopt($ch, CURLOPT_URL, $url); 
curl_setopt($ch, CURLOPT_HEADER, false);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_MAXREDIRS, 1);
$output = curl_exec($ch);
curl_close($ch);
echo $output;

EDIT

Since you want ctrl+u

Here is the PHP code to fetch the html source code of any website specified. fopen function is used to open the website URL. stream_get_contents is used to read the opened URL. The fetched code is displayed inside a textarea.

$domain = 'https://www.amazon.com/gp/css/shiptrack/view.html/ref=TE_SIMP_typ?ie=UTF8&addressID=olqnkqjstjp&latestArrivalDate=1483848000&orderID=103-0753412-5410653&shipmentDate=1483706902&orderingShipmentId=4160817392100&packageId=1';
$handle = fopen($domain, 'r');
$content = stream_get_contents($handle);
/**
// alternative to stream_get_contents
$contents = '';
while (!feof($handle)) {
    $content .= fread($handle, 8192);
}
**/ 
fclose($handle);
/** 
 * print html content on textarea
 */
echo "<textarea rows='20' cols='80'>$content</textarea>";

output will be like this: enter image description here

OR

Also if you want to manipulate the retrieved page somehow, you might want to try some php DOM parser. I find PHP Simple HTML DOM Parser very easy to use.