php替换url域名

<?php
// 原始URL
$url = "http://olddomain.com/path/to/resource";

// 要替换的域名
$oldDomain = "http://olddomain.com";
$newDomain = "https://newdomain.com";

// 替换URL域名
$newUrl = str_replace($oldDomain, $newDomain, $url);

// 输出结果
echo $newUrl; // 输出: https://newdomain.com/path/to/resource
?>

<?php
$url = "http://olddomain.com/path/to/resource";

// 使用正则表达式替换协议
$newUrl = preg_replace('/http:\/\//', 'https://', $url);

echo $newUrl; // 输出: https://olddomain.com/path/to/resource
?>

<?php
$url = "http://olddomain.com/path/to/resource";

// 使用strtr()函数进行替换
$trans = array("http://olddomain.com" => "https://newdomain.com");
$newUrl = strtr($url, $trans);

echo $newUrl; // 输出: https://newdomain.com/path/to/resource
?>