Re: php preg_match_all - exclude some matches

Welcome Gordon: This group is for posting anything (Q/A) about PHP — not much more. If you have a question and the person reading your post has the time, then they will provide an answer. Of course, that doesn’t stop anyone else from posting or posting a better way. Your question of: > Q. i guess 500Kb in a HTML form in $_POST format isn't too much ? Is it Ok ? I think there is a limit on POST,, but I don’t recall at the moment. Here’s a reference: https://stackoverflow.com/questions/2364840/what-is-the-size-limit-of-a-post-request But with files just about any file size that doesn’t overwhelm the server is allowed. I often use the King James Version of the Bible as text file to load into a single variable to show how large a string can be. I’ve also written code to upload the KJV into a database and search it. I’ve created a demo (with code) for preg_match() as you can view here: http://citw.lcc.edu/~sperlt/citw185/examples/reg-expression.php The data array you mention below reminds me of str_replace() — here’s a demo (with code): http://citw.lcc.edu/~sperlt/citw185/examples/string-replace.php I think the above will give you a start on solving your problem. Cheers, Tedd > On Nov 13, 2021, at 8:17 PM, gordonisnz@gmail.com wrote: > > Hello. Is this php group JUST for development progress for PHP ? or > can we ask questions here ? it's the only PHP forum I'm on. > > I've used preg_match quite a bit, but am unfamiliar with preg_match_all. > > Ive not started yet, but I'm going to design a script with a 500Kb > input text-file, which i want to use preg_match_all on. > > Q. i guess 500Kb in a HTML form in $_POST format isn't too much ? Is it Ok ? > > In development, I'm going to scan through the data/array & see the > lines Ive captured for possible exclude text, but even looking at the > raw data, I see lines I want to EXCLUDE from the results. > In the live version, I'll use it but have some excluded patterns. > > I have these example lines I want to exclude. (inner patterns). > > "type":"WORD1" > "type":"WORD2" > "type":"WORD3" > > Q. Is there a way to use preg_match_all to extract text by an outer > preg criteria, but if the extracted text also matches one of the > chosen inner-patterns, it is NOT included in the results. > > Can I do this in one go ? Or will I need to do a foreach loop in the > results to exclude / remove any unwanted sub-patterns after. > > I'm not sure yet, but I expect the "wanted" text to be 10-20% of the > original text. > > > -- > > Gordon.