替换DOM中的元素值

Question

I want to save DOM tags value to exist XML, I found replace function but it is in js and I need the function in PHP

I tried save and saveXML function, but this didn't worked. I have tags in XML with colon "iaiext:auction_title". I used getElement and it's work good, next i cut title to 50 characters function work too, but how i can replace old title to this new title if i dont use path like simple_load_file. How to show in my script this path?

$dom = new DOMDocument;
$dom->load('p.xml');
$i = 0;
$tytuly = $dom->getElementsByTagName('auction_title');
foreach ($tytuly as $tytul){

    $title = $tytul->nodeValue;
    $end_title = doTitleCut($title);
    //echo "<pre>";
    //echo($end_title);
    //echo "<pre>";
    $i = $i+1;
}

Answer 1

In your loop, you can update a particular nodes value the same way you fetch it - with nodeValue. So in your loop, just update it each time...

$tytul->nodeValue = doTitleCut($title);

Then after your loop, you can just echo the new XML out using

echo $dom->saveXML();

or save it using

$dom->save("3.xml");