What is the purpose of using backticks in SQL queries in PHP?

Using backticks in SQL queries in PHP is important when dealing with column or table names that contain reserved keywords or special characters. By enclosing these names in backticks, you ensure that the SQL query is executed correctly without any syntax errors. This is particularly important when dynamically generating SQL queries based on user input or variables. 

// Example of using backticks in an SQL query in PHP
$columnName = 'user_id';
$sql = "SELECT `{$columnName}`, `email` FROM `users`";
$result = $conn->query($sql);

Keywords

backticks SQL queries PHP escaping security

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