In PHP, what are some potential pitfalls of not handling error messages or return values when executing SQL queries?

Not handling error messages or return values when executing SQL queries in PHP can lead to potential security vulnerabilities, data corruption, and unexpected behavior in your application. It is important to properly handle errors and return values to ensure that your queries are executed successfully and to catch any potential issues that may arise. 

// Example of handling error messages and return values when executing an SQL query in PHP
$query = "SELECT * FROM users";
$result = mysqli_query($connection, $query);

if (!$result) {
    die("Error executing query: " . mysqli_error($connection));
}

// Process the query result here

Keywords

SQL queries error handling return values mysqli PDO

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