Regular expression for href and www/https/http links

Question

Regular expression for href and www/https/http links

Asked 10 years, 8 months ago

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Good morning, I have 2 regular expressions, where one serves to get the URL of any href, and another that I need to arrange that would just be to get the URL’s that are not inside a href, ie, only the URL’s typed with start www, https:// and http://. With the second expression I can’t get the urls inside the href.

1°Expression to catch the href

preg_replace('/href="(?!http:\/\/)([^"]+)"/e', '$this->href("$1", "$id", "$posi_email")', $texto);

2°Expression that should not pick up the urls inside a href.

preg_replace('/(www.|http:\/\/|https:\/\/)[^ ]+?([^,])+)/e', '$this->url("$1", "$id", "$posi_email")', $texto);

I was in doubt in your second expression with what you need to match the text. It would be any page link?

– Adir Kuhn

2015/02/11 at 10:23
Be very careful with that preg_replace modifier e. Has already been depreciated!

– Wallace Maxters

2015/08/18 at 18:39

1 answer

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by Rafael B. • **507** points · Answer 1 · 2017-03-18T21:34:24+00:00

Not use regular expression (Regex) to make HTML parsing. Regex nay is the most appropriate tool to do this.

There are several frameworks to do this in almost any language. In PHP you can do it natively with GIFT or with the XML Parser. In Phyton has the Beautifulsoup. In Java has the Jsoup. And so on and so forth.

There’s no way around linking to one of Stack Overflow’s most famous questions: https://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags