在HTML页面中使用新名称查找并替换所有出现的旧图像名称

Question

After I rename an image I would like to perform a search on all HTML Pages within a directory. The idea is to find all pages with the old name and update the page with new name.

I am having a problem with the string replacement portion.

$files = glob('/directory/*.html');
foreach($files AS $file) {
   $html = file_get_contents($file);
   $find = "old.jpg";
   preg_match("#src=(\"?|'?)(http://www.domain.com/images/|/images/)?$find(\"?|'?)#si", $html, $image);
   if (!empty($image[1])) {

       //find and replace all occurrences within page I need help with.

       $write = fopen($file, 'w');
       fwrite($write, $new_html);
       fclose($write);
    }
}

Examples of what I am searching for and replacing.

Find src="/images/old.jpg" replace src="/images/new.jpg"

Find src="http://www.domain.com/images/old.jpg replace src="http://www.domain.com/images/new.jpg"

Find src="/old.jpg ignore

Find src="http://www.anyotherdomain/old.jpg ignore

Answer 1

A FAR superior solution would be to include a constant with the image name in every webpage and use ti to reference your image path.

constants.inc.php

<?php
    define('IMAGE_PATH', 'absolute/path/to/image.jpg');
?>

anyotherpage.php

<?php require_once('constants.inc.php'); ?>
...
...
...
<img src="<?php echo IMAGE_PATH ?>">