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Regexp to insert string in the beginning of anchor tag?

Answer 1

+1 A:

You can find every anchor tag with /<a.*?>/i. If you want to replace something after that, the call would look like preg_replace("/(<a.*?>)/", '$1YOUR ADDITIONAL TEXT', $content).

If for whatever reason you need a double-quoted string as the replacement argument, make sure to backslash-escape the $1.

Matt Kane 2010-09-27 13:55:12

Answer 2

+2 A:

I'd use parser, DOM for instance:

$content = '...your html string...';
$doc = new DOMDocument();
$doc->loadHTML('<html><body>'.$content.'</body></html>');
$x = new DOMXPath($doc);
foreach($x->query('//a') as $anchor){
    // strrev(trim($anchor->nodeValue))) is just an example. put anything you like.
    $anchor->insertBefore(new DOMText(strrev(trim($anchor->nodeValue)))),$anchor->firstChild);
}
echo $doc->saveXML($doc->getElementsByTagName('ul')->item(0));

And as an added bonus it throws a warning you have defined id="menu-item-5" twice in your HTML, which is not valid.

Wrikken 2010-09-27 17:33:22

Almost as I coded it. Yours might be even better? $dom = new DOMDocument(); $dom->loadHTML($content); $xpath = new DomXPath($dom); $tag = $dom->getElementsByTagName("a"); $counter = $tag->length; for ($i = 0; $i < $counter; $i++) { $result = $tag->item($i)->nodeValue; $content = str_replace($result, '<img src="http://www.google.com/s2/favicons?domain=seo.getupdated.se }

Jens Törnell 2010-09-27 18:35:23

The `getElementsByTagName` could actually be faster and eliminate the need for `DOMXPath` altogether. I would not try to use a `str_replace` on the original content however: firstly, `DOMDocument` has a knack of translating entities, secondly: it is by no means guaranteed that your `$result` doesn't literally appear somewhere else, resulting in improper replacements. If you already have the stuff in `DOM`, just add an DOMElement with the DOM functions at the proper location.

Wrikken 2010-09-27 18:47:26

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Regexp to insert string in the beginning of anchor tag?

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