我如何使用PHP来混淆电子邮件地址，以免被垃圾邮件发送者收集？ [重复]

I'm programming in PHP and would like to create web pages which have email addresses that are easily read by humans but not easily harvested by spammers. The email addresses are coming from user input, and I think I can identify an address by using a regular expression, but I'm not clear exactly how I should replace the email addresses or with what, in order to keep most automated spam bots from harvesting them.I'm programming in PHP and would like to create