How can PHP developers troubleshoot and resolve issues related to template variable replacement in HTML output?

Issue: PHP developers can troubleshoot and resolve template variable replacement issues in HTML output by ensuring that the variable names in the template match the variable names in the PHP code. Additionally, they can check for any syntax errors or typos in the variable names. PHP Code Snippet:

<?php
// Define variables
$name = "John Doe";
$email = "john.doe@example.com";

// HTML template with variables
$html = "<p>Name: {{name}}</p><p>Email: {{email}}</p>";

// Replace variables in the HTML template
$html = str_replace("{{name}}", $name, $html);
$html = str_replace("{{email}}", $email, $html);

// Output the HTML with replaced variables
echo $html;
?>