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Due to custom storage needs (the "why" is not important here, thanks!) I have to save html <a> links in a specific format such as this:
myDOMNode->setAttribute("href", "{{{123456}}}");
Everything works fine until i call saveHTML() on the containing DOMDocument. This kills it, since it encodes { in %7B.
This is a legacy application where href="{{{123456}}}" works as a placeholder. The command-line parser look for this pattern exactly (unencoded) and cannot be changed.
I've no choice but to do it this way.
I cannot htmldecode() the result.
This HTML will never be displayed as this, it is just a storage need.
Thanks for your help!
Note: I've looked around for 2 hours but none of the proposed solution worked for me. For those who will blindly mark the question as duplicate: please comment and let me know.
202
As the legacy code is using {{{...}}} as a placeholder, it may be safe to use a somewhat hackish approach with preg_replace_callback. The following will restore the URL encoded placeholders once the HTML is generated:
$src = <<<EOS
<html>
<body>
<a href="foo">Bar</a>
</body>
</html>
EOS;
// Create DOM document
$dom = new DOMDocument();
$dom->loadHTML($src);
// Alter `href` attribute of anchor
$a = $dom->getElementsByTagName('a')
->item(0)
->setAttribute('href', '{{{123456}}}');
// Callback function to URL decode match
$urldecode = function ($matches) {
return urldecode($matches[0]);
};
// Turn DOMDocument into HTML string, then restore/urldecode placeholders
$html = preg_replace_callback(
'/' . urlencode('{{{') . '\d+' . urlencode('}}}') . '/',
$urldecode,
$dom->saveHTML()
);
echo $html, PHP_EOL;
Output (indented for clarity):
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html>
<body>
<a href="{{{123456}}}">Bar</a>
</body>
</html>
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