What are the potential pitfalls of using double quotes in PHP echo statements when creating links?

Using double quotes in PHP echo statements when creating links can lead to potential pitfalls if the link contains variables or special characters. This can cause syntax errors or unexpected behavior in the code. To avoid this issue, it is recommended to use single quotes for the echo statement and concatenate variables or escape special characters within the link.

// Example of creating a link using single quotes and concatenation
$link = 'https://example.com/page.php?id=' . $id;
echo '<a href="' . $link . '">Link</a>';