How can errors in SQL syntax be effectively debugged in PHP?

Errors in SQL syntax can be effectively debugged in PHP by using the mysqli_error() function to retrieve the error message from the most recent MySQLi function call. This error message will provide information about the syntax error in the SQL query, allowing you to identify and fix the issue. 

// Connect to the database
$connection = mysqli_connect("localhost", "username", "password", "database");

// Check connection
if (!$connection) {
    die("Connection failed: " . mysqli_connect_error());
}

// Attempt to execute a SQL query with syntax error
$sql = "SELECT * FROM users WHERE username = 'john' AND password = 'pass'";
$result = mysqli_query($connection, $sql);

// Check for errors in SQL query
if (!$result) {
    echo "Error: " . mysqli_error($connection);
}

// Close connection
mysqli_close($connection);

Keywords

SQL syntax errors debugging PHP error handling troubleshooting

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