note 99421 rejected from function.preg-replace by mazzanet

Note Submitter: mahul000 at gmail dot com ---- I have a paragraph of text (fairly large, say 500 words) with all possible punctuations like .,:;'"/ !%&()\ etc... I want to search for a string (may be one word or 2 or 3 words) within that paragraph, so that the result comes out as google shows... 5-6 words before the matched string and say 40 words after it - just like a narration bringing out the portion where the desired pattern is found... please help me out...