CODEWITHSUNDEEP
phpimagedom
Moz
Moz

Reputation: 192

How to use php dom document to remove and replace tags

I have image tag <img src="path_to_file.png"> but I want that the image tag be converted to link in mobile site. So I want img to be converted to an href:

<a href="path_to_file.png" target="_blank">Click here to open in new tab</a>

I am getting started with php dom. I could get all the attribute listed.

$newdocument = new DOMDocument();
$newdocument->loadHTML();
$getimagetag = $doc->getElementsByTagName('img');
foreach($getimagetag as $tag) {
    echo $src=$tag->getAttribute('src');
}

But how do we get the src attribute , then remove the img tag completely because it contains other parameter like height and length and then create new tag of link?

Hi guys I could get it done from php dom using following code

$input="<img src='path_to_file.png' height='50'>";
    $doc = new DOMDocument();
    $doc->loadHTML($input);
    $imageTags = $doc->getElementsByTagName('img');
    foreach($imageTags as $tag) {
        $src=$tag->getAttribute('src'); 
        $a=$doc->createElement('a','click here to open in new tab');
        $a->setAttribute('href',$src);
        $a->setAttribute('style','color:red;');
        $tag->parentNode->replaceChild($a,$tag);
        } 
        $input=$doc->saveHTML();
echo $input;

The create element can also be used to put text between <a></a> ie Click...new tab.

replacechild is used to remove $tag i.e. img and replace it with a tag. By setting attribute, we can add other parameters like style,target etc.

I used php dom in the end because I only wanted the data that I get from mysql to be converted and not the other elements like logo of website. Ofcourse it can be possible using javascript too.

Thanks

@dave chen for javascript way and pointing to detecting mobile link.

@nate for pointing me to a answer.

Upvotes: 3

Views: 1604

Answers (2)

Dave Chen
Dave Chen

Reputation: 10975

I would recommend doing this with JavaScript:

<!DOCTYPE html>
<html>
<head>
    <title>Images Test</title>
    <script>
        window.onload = changeImages;

        function changeImages() {
            var images = document.getElementsByTagName("img");

            while (images.length > 0) {
                var imageLink       = document.createElement("a");
                imageLink.href      = images[0].src;
                imageLink.innerHTML = "Click here to view " + images[0].title;
                images[0].parentNode.replaceChild(imageLink, images[0]);
            }
        }
    </script>
</head>
<body>
    Here is a image of flowers  : <img src="images/flowers.bmp"   title="Flowers"  ><br>
    Here is a image of lakes    : <img src="images/lakes.bmp"     title="Lakes"    ><br>
    Here is a image of computers: <img src="images/computers.bmp" title="Computers"><br>
</body>
</html>

Example

Upvotes: 2

Lwyrn
Lwyrn

Reputation: 1911

Use phpQuery, it's amazing. It's just like using jquery! :) https://code.google.com/p/phpquery/

Upvotes: 3

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