note 92018 rejected from function.preg-match-all by danbrown

Note Submitter: alaattin at gmail dot com ---- ATTENTION! The code supplied in Example 2 is erronous, If the document contains more than one occurences of a tag, than it fails: $html = '<h1>Heading Largest First</h1><h2>Heading Larger First</h2><a href=howdy.html>click me</a><h1>Heading Largest Second</h1>Some text<h3>Heading Normal</h3>'; preg_match_all("/(<([\w]+)[^>]*>)(.*)(<\/\\2>)/", $html, $matches, PREG_SET_ORDER); foreach ($matches as $val) { echo "matched: " . $val[0] . "\n"; echo "part 1: " . $val[1] . "\n"; echo "part 2: " . $val[3] . "\n"; echo "part 3: " . $val[4] . "\n\n"; } ?> The ouput is: matched: <h1>Heading Largest First</h1><h2>Heading Larger First</h2><a href=howdy.html>click me</a><h1>Heading Largest Second</h1> part 1: <h1> part 2: Heading Largest First</h1><h2>Heading Larger First</h2><a href=howdy.html>click me</a><h1>Heading Largest Second part 3: </h1> matched: <h3>Heading Normal</h3> part 1: <h3> part 2: Heading Normal part 3: </h3> The reqular expression is missing a question mark, the corrected snippet should be: $html = '<h1>Heading Largest First</h1><h2>Heading Larger First</h2><a href=howdy.html>click me</a><h1>Heading Largest Second</h1>Some text<h3>Heading Normal</h3>'; preg_match_all("/(<([\w]+)[^>]*>)(.*?)(<\/\\2>)/", $html, $matches, PREG_SET_ORDER); foreach ($matches as $val) { echo "matched: " . $val[0] . "\n"; echo "part 1: " . $val[1] . "\n"; echo "part 2: " . $val[3] . "\n"; echo "part 3: " . $val[4] . "\n\n"; } ?> Then the output will be: matched: <h1>Heading Largest First</h1> part 1: <h1> part 2: Heading Largest First part 3: </h1> matched: <h2>Heading Larger First</h2> part 1: <h2> part 2: Heading Larger First part 3: </h2> matched: <a href=howdy.html>click me</a> part 1: <a href=howdy.html> part 2: click me part 3: </a> matched: <h1>Heading Largest Second</h1> part 1: <h1> part 2: Heading Largest Second part 3: </h1> matched: <h3>Heading Normal</h3> part 1: <h3> part 2: Heading Normal part 3: </h3>