preg match check if present class

Question

I have this code in my PHP page:

$regex = '/<img.*?>/';

I need that preg_match replace only images that don't have class="nopopup"

What is the correct regular expression?

Why is this marked as a duplicate ? This question doesn't ask _HOW TO USE A DOM IN PHP_ does it ?? It asks for a _**REGEX**_ , not a DOM parsing usage question !! — , Dec 19 '19 at 18:21

score 0 · Answer 1 · answered Dec 19 '19 at 17:59

I propose a solution that avoids complicated regular expressions. Rather, keep your simple regex that looks for image elements, and use preg_replace_callback. For each match, this function will call a function defined by you and passes it that match. Then, you use a simple regular expression that scans the match for the string class="nopopup". It it's there, perform the replacement. If it's not there, you just return the original string.

preg match check if present class

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