How can the function mysql_error() be used to troubleshoot PHP scripts that involve MySQL queries?

When troubleshooting PHP scripts that involve MySQL queries, the function mysql_error() can be used to display any error messages generated by the MySQL database. This can help identify issues such as syntax errors, connection problems, or permission errors. By including mysql_error() in the code, developers can quickly pinpoint and address any problems that may arise during the execution of MySQL queries. 

$query = "SELECT * FROM users";
$result = mysql_query($query);

if (!$result) {
    die('Error: ' . mysql_error());
}

// Continue with processing the query results

Keywords

PHP mysql_error() MySQL queries troubleshooting error handling

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