How can reserved keywords in MySQL, like "alter", impact the functionality of an SQL query in a PHP script?

Reserved keywords in MySQL, like "alter", can impact the functionality of an SQL query in a PHP script if they are used as column names, table names, or aliases without proper escaping. To solve this issue, you should always wrap reserved keywords in backticks (`) in your SQL queries to avoid conflicts with MySQL keywords. 

<?php
// Incorrect SQL query without proper escaping
$query = "SELECT alter FROM users";

// Corrected SQL query with backticks for reserved keyword
$query = "SELECT `alter` FROM users";

Keywords

MySQL reserved keywords SQL query PHP script functionality

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