What is the purpose of using mysql_error() in PHP code?

The purpose of using mysql_error() in PHP code is to retrieve the error message generated by the most recent MySQL function call. This can be useful for debugging and troubleshooting database-related issues in your PHP application. 

// Example of using mysql_error() to handle errors in a MySQL query
$query = "SELECT * FROM users";
$result = mysql_query($query);

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

// Continue processing the query result if no errors occurred
while ($row = mysql_fetch_assoc($result)) {
    // Process each row of data
}

// Remember to close the MySQL connection after finishing the query
mysql_close($connection);

Keywords

mysql_error PHP error handling MySQL database debugging

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