What role does the use of escape characters play when including links as variables in PHP scripts for HTML emails?

When including links as variables in PHP scripts for HTML emails, special characters in the URL can cause issues with the email rendering correctly. To solve this problem, you can use escape characters like urlencode() to encode the URL and ensure that it is properly formatted for use in the email. 

<?php
$link = 'https://example.com/page?param=value';
$encoded_link = urlencode($link);

$html = "<a href='{$encoded_link}'>Click here</a>";

echo $html;
?>

Keywords

escape characters variables PHP scripts HTML emails links

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