replacing image tags

[joshis]

Hi,

 

I would like to replace the img tags in my entire html string as the following way.

 

1. detect all img tags

2. if it has a height attribute, replace with my new value.

3. if it has a width attribute, replace with my new value.

4. add a link wraper for the new img tag

5. also add a div wraper to the new <a><img /> </a> element.

 

 

 

My goal is to change all the large images to thumburl. Actually all the large images are surrounded by a anchor tag. I like to add that href to the new thumbnail link

 

eg:

<div class='thumb-wrap'><a href='mypage.php?id=4'><img width='500' height='200' src='image.jpg' /></a></div>

 

 

to

<div class='thumb-wrap'><a href='mypage.php?id=4'><img width='100' height='50' src='image.jpg' /></a></div>

 

Can I write this using regex expression?

 

[cags]

Probably not the best way of doing it, but something like this should manage most of what your after. Your descriptions of 4 and 5 got a little hazy especially with the example given at the end, but hopefully you'll get the idea.

 

$width = 7;
$height = 9;
$input = "<div class='thumb-wrap'><a href='mypage.php?id=4'><img width='500' height='200' src='image.jpg' /></a></div>";
$pattern = array("~(<img.*?width=')(\d+)'~", "~(<img.*?height=')(\d+)'~", "~(<img[^>]*>)~");
$replace = array("\${1}{$width}'", "\${1}{$height}'", "<div><a href='blah'>$1</a></div>"); 

echo preg_replace($pattern, $replace, $input);

[joshis]

Sorry my steps mislead you, please ignore steps 4 and 5. The anchor and div tag should be there, around the img. We need to modify only the img tag, as example.