<?php $source = '<p>Today, not only we have so many breeds that are trained this and that.</p> <h4><strong>We must add a dot after the closing strong</strong></h4> <p>Hunting with your dog is a blah blah with each other.</p> <h2>No need to change this one!</h2> <p>Hunting with your dog is a blah blah with each other.</p>'; $source = addMissingPunctuation( $source ); echo $source; function addMissingPunctuation( $input ) { return preg_replace("/[^,.;!?]\K(<\/h[1-6]>)/mi", ".$0", $input); }
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