preg_replace attribute values

So I have a working preg_match pattern for finding the value of an HTML attribute in a string, and I need to do the same thing with preg_replace - not find and return the value, but replace it with a new one.

But it doesn't work if I just use the preg_match pattern... I'm stuck.

Here's the code:

    $string = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" 
width="437" height="288" id="viddler">
<param name="movie" value="http://www.viddler.com/player/1234567890/" />
<param name="allowScriptAccess" value="always" />
<param name="allowFullScreen" value="true" />
<param name="flashvars" value="fake=1"/>
<embed src="http://www.viddler.com/player/1234567890/" 
width="437" height="288" type="application/x-shockwave-flash" 
allowScriptAccess="always" allowFullScreen="true" flashvars="fake=1" 
name="viddler" ></embed></object>';

preg_match("|<*[^>]*width=\"([^>]+)\"[^>]*>|Ui", $string, $results);

echo 'Width: '.$results[1];

This works and will return 437. If I use the same pattern in a preg_replace() function though, it will strip out the entire <object> tag. I need to replace that 437 with anything else, say 200. And while we're at it, I need to replace the height value as well. Finally, this should work for any embed code or iframe, so it should just look for width=" or height=", respectively... just like the preg_match example above.

Any help is much appreciated.

ED开发者_开发知识库IT: Tim's solution below

I got Tim's pattern to work with a small modification:

$interm = preg_replace('|(<*[^>]*width=)"[^>]+"([^>]*>)|Ui', '\1"200"\2', $string);
$result = preg_replace('|(<*[^>]*height=)"[^>]+"([^>]*>)|Ui', '\1"300"\2', $interm);

Without this change, the first function replaces the width, but it takes out every attribute after that in the tag.

Thanks to Tim for the solution!

You need to capture the match around the string to be replaced:

Since you want to replace height and width with different values, you need two regexes, applied sequentially:

$interm = preg_replace('/(<*[^>]*width=)"[^>]+"([^>]*>)/', '\1"200"\2', $subject);
$result = preg_replace('/(<*[^>]*height=)"[^>]+"([^>]*>)/', '\1"300"\2', $interm);