CODEWITHSUNDEEP
phpregex
Benjamin Intal
Benjamin Intal

Reputation: 2815

PHP Remove all paragraph tags inside header tags

I've been dwelling on this for a while.

I have this string (there are more contents before and after the h2 tags):

...<h2 style='line-height: 44px;'><p>Lorem Ipsum</p></h2>...

What regex do I use to remove all the <p> and </p> tags inside those header tags?

I'm trying to do something like this, but the positive lookbehind one is not working:

// for the starting <p> tag
$str = preg_replace('/(?<=<h[1-6]{1}[^>]+>)\s*<p>/i', '', $str);
// for the ending </p> tag
$str = preg_replace('/<\/p>\s*(?=<\/h[1-6]{1}>\s*)/i', '', $str);

This does not take account paragraph tags deep inside the text within the <h2> tag also

[Update]

This is derived from one of PeeHaa's suggested links

// for the starting <p> tag
$str = preg_replace("#(<h[1-6].*?>)<p.*?>#", '$1', $str);
// for the ending </p> tag
$str = preg_replace("#<\/p>(<\/h[1-6]>)#", '$1', $str);

Upvotes: 1

Views: 3460

Answers (2)

sg3s
sg3s

Reputation: 9567

You shouldn't try parse html with regexes, though having said that, since this is a subset of html and not a full document / nested layout, it is possible:

preg_replace('/(<h([1-6])[^>]*>)\s?<p>(.*)?<\/p>\s?(<\/h\2>)/', "$1$3$4")

Test case here:

http://codepad.org/oA2rtNP9

Upvotes: 3

PeeHaa
PeeHaa

Reputation: 72681

PHP Parse HTML code

Parse Website for URLs

php - parse html page

And many many many others (I could have added 100+ more).

Basically the thing is:

Don't try to parse HTML using regex. HTML is not a regular language.

Use a HTML parser for this.

For example: http://php.net/manual/en/book.dom.php

Upvotes: 1

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