preg 替换所有链接

Question

$text = "Clip - http://depositfiles.com/files/8b5560fne Mp3 - 
    http://letitbit.net/download/4920.adaf494fbe2b15c34a4733f20/Madonna___The_Power_Of_Good_Bye.mp3.html 
    Madonna - The power of goodbye Your heart is not open, so I must go The spell has been broken...I 
    loved you so Freedom comes when you learn to let go Creation comes when you learn to say no You were 
    my lesson I had to learn I was your fortress you had to burn Pain is a warning that something's wrong 
    I pray to God that it won't be long Do ya wanna go higher? Chorus: There's nothing left to try 
    There's no place left to hide There's no greater power than the power of good-bye Your heart is not 
    open, so I must go The spell has been broken...I loved you so You were my lesson I had to learn I was 
    your fortress Chorus: There's nothing left to lose There's no more heart to bruise There's no greater 
    power than the power of good-bye Bridge: Learn to say good-bye I yearn to say good-bye Chorus: There's 
    nothing left to try There's no more places to hide There's no greater power than the power of good-bye 
    There's nothing left to lose There's no more heart to bruise There's no greater power than the power 
    of good-bye";

我怎样才能彻底切断本文中的所有链接？

Answer 1

您可以尝试这样简单的操作：

$text = preg_replace("#\S+://\S+#", "", $text);

不过，它会在结果字符串中留下双空格。你可以处理这个问题，但会变得稍微复杂一些。我也不检查删除的文本是否是有效的网址。任何包含 :// 的内容都会被删除。

Answer 2

一种简单的方法：

preg_replace('/http[^\s]+/', "", $str)

将任何以“http”开头且包含非空格字符的字符串替换为空字符串。

这是假设您只获取 http。否则，就不那么天真了（但仍然大多天真）：

preg_replace('#[a-z]+://[^\s]+#', "", $str)