替换HTML图像的标题

I'm trying to figure out how to replace the title portion of an image (title="Title is here") in PHP, but I cannont get it to work, so could someone please help?

The title could be literally anything, so I need to find title"{anything here}" and replace that (as below).

I'm trying to us preg_replace(), but if there is a better way, I'm open to suggestions.

I've tried several different variations, but I think this is not too far off the mark -

$pattern = '#^title="([a-zA-Z0-9])"$#';
$replacement = 'title="Visit the '.$service['title'].' page';
$service_image = preg_replace($pattern, $replacement, $service_image);

<?php

$html = '<img src="whatever.jpg" title="Anything">';


$dom = new DOMDocument;
$dom->loadHTML($html);
$img = $dom->getElementsByTagName("img")->item(0);
/** @var $img DOMElement  Now, $img contains the DOM note representing the image. */
$img->setAttribute("title", "Whatever you want here!");

/* Export the image alone (if not used like this,
 * you'd get a complete HTML document including head and body).
 *
 * This ensures you only get the image.
 */
echo $dom->saveXML($img);

No regex for HTML please. This will work for you.

Use this snippet :

$tag = '<img title="My Old Title" src="localhost"  alt="this is the alt"/>';
echo preg_replace('/(title)=("[^"]*")/i','title="My New Title"',$tag);
// <img title="My New Title" src="localhost" alt="this is the alt">