CODEWITHSUNDEEP
phpregeximagehtml-parsingclass-attributes
Kresimir Pendic
Kresimir Pendic

Reputation: 3614

Add a new class to img tag's class list

I need simple regex expression correctnes..

this regex

preg_replace('/(<img.*? class=".*?)(".*?>)/', '$1 ' . 'myclass' . '$2', $html)

targets this

<img src="er" alt="aa" width="641" height="481" class="class1 class2">

and works ok!

But wordpress generetes ending tag like this /> and regex failes

<img src="er" alt="aa" width="641" height="481" class="class1 class2" />

How to correct the regex?

Upvotes: 0

Views: 51

Answers (2)

mickmackusa
mickmackusa

Reputation: 47874

Use a legitimate DOM parser to modify your HTML document.

Isolate the img tags, get their current class cakes, append your new class, then set the extended value back to the img.

Code: (Demo)

$doc = new DOMDocument();
$doc->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$xpath = new DOMXPath($doc);
foreach ($doc->getElementsByTagName('img') as $img) {
    $img->setAttribute('class', $img->getAttribute('class') . " myclass");
}
echo $doc->saveHTML();

Upvotes: 0

Legionar
Legionar

Reputation: 7587

preg_replace('/(<img.*? class=".*?)(".*?\/>)/', '$1 ' . 'myclass' . '$2', $html);

Upvotes: 3

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