如何使用PHP将网页变为变量

<?php
$url = "https://www.example.com";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$content = curl_exec($ch);
curl_close($ch);

echo $content;
?>

<?php
$url = "https://www.example.com";
$content = file_get_contents($url);

echo $content;
?>