PHP Replace Between Tags with Regex

Question

I am having a heck of a time replacing the data between two tags. I can't figure out the regex that will match this pattern. My tags are simply  and 

Code:

        $products[''.$row[0].''][2] = preg_replace("/(<!-- Model # Start -->).*(<!-- Model # End -->)/i", "$1$2", $products[''.$row[0].''][2]);
        echo $products[''.$row[0].''][2] . "\n";

Data: $products[''.$row[0].''][2]

Economical. 7 mils thick, tough & stretchy. Each roll cellophane wrapped. UL listed.

<!-- Model # Start -->
<p style='text-align: right;'>16736</p>
<!-- Model # End -->

What is the purpose of the concatenating of empty strings? $products[''.$row[0].'']. Trying to get something like (string) cast? — alex
– alex, Commented Dec 18, 2010 at 1:18

morja · Accepted Answer · 2010-12-18 01:48:04Z

1

Try:

/(.*<!-- Model # Start -->).*(<!-- Model # End -->.*)/im

Note the m flag for multiline matches.

In case you have multiple occurances of the tags, you could use a reluctant quantifier to get the first match, or use lookaround.

http://rubular.com/ helps for testing.

edited Dec 18, 2010 at 1:48

answered Dec 18, 2010 at 1:30

morja

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2 Comments

Chris Edwards Over a year ago

I think I jumped the gun to quick. This code ... $products[''.$row[0].''][2] = preg_replace("/(.*).*(.*)/im", "$1$2", $products[''.$row[0].''][2]); ... matches in the Rubular but does not work.

Chris Edwards Over a year ago

actually I just needed a /ims , whatever the s does made it work multi-line. Thanks, for the help!

alex · Accepted Answer · 2010-12-18 01:14:39Z

0

I'd match it like so...

$match = 'Model\s#\s';

preg_replace('/<!--\s?' . $match . 'Start\s?(.*?)\s?' . $match . 'End\s?-->/i', '<span>$1</span>', $row);

answered Dec 18, 2010 at 1:14

alex

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