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PODoes PHP or Apache affect DTD: Problem with rendering XHTML in IE7 standard mode
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  1. PODoes PHP or Apache affect DTD: Problem with rendering XHTML in IE7 standard mode
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    copied!<p>I have a static HTML(index.html) with DOCTYPE below which will trigger the standard mode in IE7:</p> <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"&gt; &lt;head&gt; </code></pre> <p>I then transform the page into three PHP HTML templates:header.html.php, index.php, footer.html.php. And the header.html.php includes the exact DOCTYPE as above.</p> <p>But every time I claim the index.php in IE7, it messes up the rendering.</p> <p>I have used the command <code>javascript:alert(document.compatMode)</code> to test in IE7 and FF3</p> <p>For the static html page, both IE7 and FF3 give me CSS1Compat, which is the mode I expected; But for the PHP generated page, FF3 give me CSS1Compat while IE7 give me BackCompat.</p> <p><strong>Here is something I think the problem lies:</strong> I have downloaded the page from IE7 and found the DOCTYPE become <code>&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"&gt;</code> without the address.</p> <p>But downloading the same PHP generated page in ff3 and chrome, the DOCTYPE is correctly <code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"&gt;</code></p> <p>When I test the page, not surprisingly, the very first lines the source code the W3C validator get is <code># &lt;!-- A customized tag to distinguish different pages --&gt; # &lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"&gt;</code></p> <p>And a W3C validation indicates the empty first line.</p> <p>I have removed the BOM on <strong>all</strong> the static PHP files and CSS files but I still get the problem.</p> <p>Is this a problem with Apache or PHP? Anyone have a clue to fix this?</p> <p>Thanks.</p>
 

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