How can the code be modified to ensure that each image URL is displayed in a separate textarea instead of all URLs being concatenated into one?

The issue can be solved by iterating through the array of image URLs and displaying each URL in a separate textarea element. This can be achieved by using a foreach loop to go through each URL and echo it within its own textarea tag.

<?php
$image_urls = array("url1", "url2", "url3");

foreach ($image_urls as $url) {
    echo "<textarea>$url</textarea><br>";
}
?>