PHP：从链接标题中删除`http：//`

Question

I have a string that looks like:

$string = '<a href="http://google.com">http://google.com</a>';

How can I remove the http:// part from the link text, but leave it in the href attribute?

Answer 1

Without using a full blown parser, this may do the trick for most situations...

$str = '<a href="http://google.com">http://google.com</a>';

$regex = '/(?<!href=["\'])http:\/\//';

$str = preg_replace($regex, '', $str);

var_dump($str); // string(42) "<a href="http://google.com">google.com</a>"

It uses a negative lookbehind to make sure there is no href=" or href=' preceding it.

See it on IDEone.

It also takes into account people who delimit their attribute values with '.