How php can parse html to find links in user input? [duplicate]

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开发者_JAVA技巧Possible Duplicates:

Best methods to parse HTML with PHP

PHP Linkify Links In Content

I want to parse html to find links, but i want not only to find links like http://www.aaa.com, but also links like www.apple.com or just apple.com. I dont wand to find a tags. I want to find links in user input text.

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Read here in preg_match Manual Page.

The expression I would use:

/https?:\/?\/?[^\ ]+/i