What is the significance of using mysql_error() function when encountering errors in PHP MySQL queries?

When encountering errors in PHP MySQL queries, using the mysql_error() function can help in identifying and debugging the issue. This function returns the error message from the most recently executed MySQL function, which can provide valuable information for troubleshooting and resolving the problem. 

// Example of using mysql_error() function to handle errors in MySQL queries
$query = "SELECT * FROM users WHERE id = '123'";
$result = mysql_query($query);

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

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

// Don't forget to free the result set
mysql_free_result($result);

Keywords

PHP MySQL mysql_error() error handling debugging

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