从超链接中删除尾随空格

Question

I want to prevent spaces in hyperlinks on a UGC site. I have written regular expression it works perfect except its not removing trailing space from link and anchor text.

Here is my code:

$text = '< a href =   "   http://www.examplesite.com/       "> Example site   </a>';

$text = preg_replace('#(<(\s+)*a(\s+)*href(\s+)*=(\s+)*("|\')(\s+)*([^"]+)("|\')>(\s+)*([^<]+)(\s+)*</a>)#','<a href="$8">$11</a> ',$text);

Output

<a href="http://www.examplesite.com/      ">Example site  </a> 

URLs also contain spaces i.e. http://www.examplesite.com/blog/a page with space.html

Answer 1

Try this:

preg_replace("{<\s*a\s*href\s*=\s*(\"|')\s*([^\s]+)\s*\\1>\s*(.*?)\s+</a>}","<a href='$2'>$3</a>",$text);