[RESOLVED] Change html tags to lowercase

wilku

Hi.

I need to change html tags in a group of templates to lowercase (migrating to xhtml). I have mixed some examples I found drifting in the net and came up with:

$tresc = '<HTML><BODY><A HREF="iNDeX.htML" 
NAME="wHAtever" taRGET="aS">This SHOULDNT chANGE casE.</A>
<FORM METHOD="POST" ACTION="Index.php" name="Form1">
	<SELECT NAME="nnn">
		<OPTION VALUE="CaseSensitive">This is Case Sensitive</Option>
	</SELECT>
</FORM>
</Body></html>';


$tresc = preg_replace("/(<\/?)(\w+)([^>]*>)/e",
             "'\\1'.strtolower('\\2').'\\3'",
             $tresc);
$tresc = preg_replace_callback('/(<\/?)(\w+)([^>]*>)/', 'atribs_lower', $tresc);
echo '<pre>'.htmlentities($tresc).'</pre>';

function atribs_lower($matches) {

return preg_replace('/(\w+)=/e',"strtolower('\\1').'='",stripslashes($matches[0]));
}

The first preg_replace replaces tags. The second one finds the same strings once more and replaces attributes (names but not values). stripslashes in the second one is necessary because the first one adds slashes before double quotes (I don't know why).

This solution kind of works, but can this be done somehow better, more effective - without using preg_replace three times?
Thanks for any suggestions.

NogDog

Do you happen to have the [man]Tidy[/man] extension installed? If so, you could probably use one of the tidy_repair_*() functions, specifying the xhtml-output => true configuration parameter.

wilku

Unfortunately I don't have Tidy extension, but it shouldn't be hard to install. output-xhtml option isn't for me because it adds doctype to every file and, as the files I'm parsing are templates that can contain only a part of a page, this is not what I want. But tidy makes tags and attributes small by default so with some configuration parameters it should do the trick. Thank you for the suggestion.

NogDog

This appears to do a pretty good job:

<?php
header('Content-Type: text/plain');

$test = <<<END
<H1 ClaSS="TeSt">Test</h1>
<p iD="aAbB" onClicK="alert('HELLO');">This is a TEST.
<IMG SRc='foobar.gif'>It is only a test.</P>

END;
$config = array(
   'output-xhtml'   => 1,
   'show-body-only' => 1
);
echo tidy_repair_string($test, $config);

Outputs:

<h1 class="TeSt">Test</h1>
<p id="aAbB" onclick="alert('HELLO');">This is a TEST. <img src=
'foobar.gif' />It is only a test.</p>

wilku

Thank you!