PHP获取当前页面（网页）完整URL链接地址代码

在编写PHP程序的时候，经常要获取当前页面的URL，下面提供一些用于获取当前网页链接的代码函数。

获取完整URL，包含URL参数

# 示例一
# 输出方法：直接调用函数 echo curPageURL();
function curPageURL() {
	$pageURL = 'http';
	if ($_SERVER["HTTPS"] == "on") {
		$pageURL .= "s";
	}
	$pageURL .= "://";
	if ($_SERVER["SERVER_PORT"] != "80") {
		$pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];
	} else {
		$pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];
	}
	return $pageURL;
}

# 示例二
# 输出方法：直接调用函数 echo get_urls();
function get_urls() {
	$sys_protocal = isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == '443' ? 'https://' : 'http://';
	$php_self = $_SERVER['PHP_SELF'] ? $_SERVER['PHP_SELF'] : $_SERVER['SCRIPT_NAME'];
	$path_info = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '';
	$relate_url = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : $php_self.(isset($_SERVER['QUERY_STRING']) ? '?'.$_SERVER['QUERY_STRING'] : $path_info);
	return $sys_protocal.(isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '').$relate_url;
}

获取无参数URL，问号前面的链接

# 示例一
# 输出方法：直接调用函数 echo curPageURL();
function curPageURL() {
	$pageURL = 'http';
	if ($_SERVER["HTTPS"] == "on") {
		$pageURL .= "s";
	}
	$pageURL .= "://";
	$this_page = $_SERVER["REQUEST_URI"];   
	// 只取 ? 前面的内容
	if (strpos($this_page, "?") !== false) {
		$this_pages = explode("?", $this_page);
		$this_page = reset($this_pages);
	} 
	if ($_SERVER["SERVER_PORT"] != "80") {
		$pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $this_page;
	} else {
		$pageURL .= $_SERVER["SERVER_NAME"] . $this_page;
	}
	return $pageURL;
}

# 示例二
function curPageURL() {
	$pageURL = 'http';	
	if ($_SERVER["HTTPS"] == "on") {
		$pageURL .= "s";
	}	
	$pageURL .= "://";
	
	if ($_SERVER["SERVER_PORT"] != "80") {
		$pageURL .= $_SERVER["SERVER_NAME"].":" . $_SERVER["SERVER_PORT"] . $_SERVER['PHP_SELF'];
	} else {
		$pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER['PHP_SELF'];
	}
	return $pageURL;
}

以下是PHP获取URL常用函数

# 获取域名或主机地址，不含HTTP/HTTPS协议，最终输出：www.zhutishou.com
echo $_SERVER['HTTP_HOST'];
# 拼接HTTP/HTTPS协议，输出：https://www.zhutishou.com
echo 'https://' . $_SERVER['HTTP_HOST'];

# 获取网页地址，输出：/shou/example.php
echo $_SERVER['PHP_SELF'];

# 获取URL参数，包括参数名，输出：id=1
echo $_SERVER["QUERY_STRING"];

# 获取用户代理
echo $_SERVER['HTTP_REFERER'];

# 获取完整的URL，输出：https://www.zhutishou.com/shou/example.php?id=1
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];

# 包含端口号的完整URL，输出：https://www.zhutishou.com:443/shou/example.php?id=1
echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]

# 获取路径，输出：https://www.zhutishou.com/shou
$url = 'https://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"];
echo dirname($url);