regex find <table> and modify

Question

I have code on a side which looks like the one below and will be generated from a CMS. The user can generate a table, but I have to put a <div> around it.

<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et 
dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo 
dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem</p>

<table>
<thead>
    <tr><td></td></tr>
    ...
</tbody>
</table>

<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et 
dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo 
dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem</p> 
<table>
<thead>
    <tr><td></td></tr>
    ...
</tbody>
</table>
...

My goal is it now to give every <table> a <div class="table">

I´ve tried it with regex and got this result:

function smarty_modifier_table($string) {
    preg_match_all('/<table.*?>(.*?)<\/table>/si', $string, $matches);
    echo "<pre>";
    var_dump($matches);
}
/* result
array(2) {
    [0]=> string(949) "<table>...</table>"
    [1]=> string(934) "<thead>...</tbody>"
}
array(2) {
    [0]=> string(949) "<table>...</table>"
    [1]=> string(934) "<thead>...</tbody>"
}
*/

First of all, I do not understand why the second array [1]=> string(934) "<thead>...</tbody>" appears and second how to fit the modified array back into the string on the right place.

regexp is not the right tool for that. See stackoverflow.com/questions/6751105/… — cadrian
– cadrian, Commented Apr 15, 2014 at 8:07
array[1] is the group matches by the first pair of parenthesis. — Toto
– Toto, Commented Apr 15, 2014 at 8:19

gog · Accepted Answer · 2014-04-15 08:48:58Z

0

If your html is really simple like this, the following would probably work:

print preg_replace('~<table.+?</table>~si', "<div class='table'>$0</div>", $html);

If, however, you can have nested tables:

<table>
    <tr><td> <table>INNER!</table> </td></tr>
</table>

this expression will fail miserably - that's why using regexes to parse html is not recommended. To handle complex html it's better to use a parser library, for example, XML DOM:

$doc = new DOMDocument();
$doc->loadHTML($html);
$body = $doc->getElementsByTagName('body')->item(0);
foreach($body->childNodes as $s) {
    if($s->nodeType == XML_ELEMENT_NODE && $s->tagName == 'table') {
        $div = $doc->createElement("div");
        $div->setAttribute("class", "table");
        $body->replaceChild($div, $s);
        $div->appendChild($s);
    }
}

This one handles nested tables correctly.

edited Apr 15, 2014 at 8:48

answered Apr 15, 2014 at 8:37

gog

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Pedro Lobito · Accepted Answer · 2014-04-15 08:25:56Z

0

$buffer = preg_replace('%<table>(.*?)</table>%sim', '<table><div class="table">$1</div></table>', $buffer);

answered Apr 15, 2014 at 8:25

Pedro Lobito

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Comments

ToTe · Accepted Answer · 2014-04-15 14:42:21Z

0

Thank you all for your incredible fast and perfect help! So it works for me.

$result = preg_replace('~~si', "$0", $string);

return $result;

regards

Torsten

edited Apr 15, 2014 at 14:42

answered Apr 15, 2014 at 9:22

ToTe

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