Extract JSON object from html using PHP regex

Question

After reading all related threads i can not find anything that shows regex that is capable of extracting a full json object from within html content so im hoping someone can help me get the right regex to resolve the issue.

For example the json im looking to extract looks like this:

"taxonomy": {"page":"/products/1/","price":"350.00","country_code":"gb","brand":"apple"},

Im trying to extract the entire "taxonomy" object that is inside a java script function within the html.

I have tried preg_match('/\taxonomy\s*=(.+)(?:;|/', $file, $m); but having no joy and regex is something im trying to learn.

Im aiming to have the regex parse the html and pull the taxonmy object from the html so im left with the following: {"page":"/products/1/","price":"350.00","country_code":"gb","brand":"apple"} that i can then json_decode

I would be greatly appreciate if someone could help me get to the correct regex, Thanks.

Why the downvote? We all need help in life at some point and we all start off at some point. I guess asking for a little help from people with more experience is a bad thing? — Jrad51
– Jrad51, Commented Aug 25, 2017 at 10:17
Don't worry about down vote, someone just hands faster than their brain, check out my answer. — Viet Nguyen
– Viet Nguyen, Commented Aug 25, 2017 at 10:22

Viet Nguyen · Accepted Answer · 2017-08-25 10:27:09Z

1

This regex pattern should work, but it depends on what is your full HTML looks like

<?php
$file = '"taxonomy": {"page":"/products/1/","price":"350.00","country_code":"gb","brand":"apple"},
';
preg_match('@"taxonomy":(.*?)\},@s', $file, $m);

if(!empty($m[1])){
    $jsonString = "[".$m[1] . "}]";
    $array = json_decode($jsonString, true);
    print_r($array);
}

https://regex101.com/r/fytDO8/1/

edited Aug 25, 2017 at 10:27

answered Aug 25, 2017 at 10:20

Viet Nguyen

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3 Comments

tima Over a year ago

Your regex ignores the closing bracket and captures all the whitespace before the opening bracket.

Jrad51 Over a year ago

I was able to get this working from the fiddle but with the above answer it was throwing a unknown modifier 'g' error however from the fiddle you provided i was able to get it working using the following: /"taxonomy":(.*?)\},/

Jrad51 Over a year ago

So i am very very great full for your time and effort it is greatly appreciated. Thanks a lot :)

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