Are there any specific PHP coding conventions or guidelines to follow when outputting PHP fields in the frontend to avoid errors or inconsistencies?

When outputting PHP fields in the frontend, it is important to properly sanitize and escape the data to prevent security vulnerabilities such as Cross-Site Scripting (XSS) attacks. One common approach is to use the htmlspecialchars() function to escape special characters in the output. Additionally, it is recommended to follow a consistent coding style and naming conventions to ensure readability and maintainability of the code.

<?php
// Example of outputting a PHP field in the frontend with proper sanitization
$field_value = "<script>alert('XSS attack');</script>";
echo htmlspecialchars($field_value, ENT_QUOTES, 'UTF-8');
?>