Preg replace only outside HTML tags

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December 21st, 2011, 04:15 AM

msolution

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Preg replace only outside HTML tags

Hi,
i need to search and replace keywords, but these keywords should not be html tags.

for example if the user inputs "strong"/ "class", it should replace all "strong" Or "class" with a keyword of my choice, but all html tag <strong> and all attributes "class" should remain as is.

been trying all combinations but just cant get it .

Thanks in advance.

M.
PS: i want to use preg replace and NOT DOM.

December 21st, 2011, 03:40 PM

requinix

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Do a preg_split() to separate the text into parts that alternate as HTML tags and raw text, and do the rest of the replacing on only the text parts.

PHP Code:


		
			
 $parts = preg_split('#</?[a-z][^>]*>#i', $text, -1, PREG_SPLIT_DELIM_CAPTURE);

print_r($parts);

I'm too lazy to look up the syntax to make sure I'm right, but I think I am.

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December 21st, 2011, 11:58 PM

ragax

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Not to take anything away from requinix's idea, which might be exactly what you need.

Just another potential direction depending on your inclination: Are you familiar with lookarounds? To give you an example, this regex:

Code:

(?!strong>)(?<!<)\bstrong\b

matches the word "strong" that is neither followed by a ">" nor preceded by a "<".

Wishing you a fun day

Last edited by ragax : December 21st, 2011 at 11:59 PM. Reason: Improved punctuation.

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