How can one troubleshoot and debug SQL syntax errors in PHP?

To troubleshoot and debug SQL syntax errors in PHP, one can start by carefully reviewing the SQL query being used and checking for any syntax errors such as missing commas, quotation marks, or incorrect table/column names. It can also be helpful to echo or print out the SQL query to see if there are any obvious mistakes. Additionally, using error handling functions like mysqli_error() can provide more detailed information about the syntax error. 

// Example SQL query with syntax error
$sql = "SELECT * FROM users WHERE username = '$username' AND password = '$password'"

// Debugging by echoing the SQL query
echo $sql;

// Using mysqli_error() to get detailed error message
$result = mysqli_query($conn, $sql);
if (!$result) {
    echo "Error: " . mysqli_error($conn);
}

Keywords

SQL syntax errors debugging troubleshooting PHP error messages

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