How do I use a hyperlink in link variable?

问题

I'm using $_GET['link'] to recieve the link...

but the link has &'s in it causing the variable to be read incorrectly.

How do I do this?

this is the link...

http://vk.com/video_ext.php?oid=172860651&id=162881967&hash=1864975b71a6085a&hd=1

for reference.

Thanks.

回答1:

In writing the link use urlencode then in reading the link use urldecode:

<a href="http://example.com/file.php?link=<?php echo urlencode($link);?>">link</a>

<?php
   $link = urldecode($_GET['link']);    
   echo $link;
?>

回答2:

You should use PHP's urlencode (http://php.net/manual/en/function.urlencode.php) when you create the link and and then use urldecode (http://php.net/manual/en/function.urldecode.php) on $_GET['link'] to get the correct value.

来源：https://stackoverflow.com/questions/13663393/how-do-i-use-a-hyperlink-in-link-variable