How can the use of mysql_error() help in troubleshooting PHP code that involves database queries?

When troubleshooting PHP code that involves database queries, the use of mysql_error() can help by providing detailed error messages that can pinpoint the issue in the query. This function can display error messages returned by MySQL, such as syntax errors, connection errors, or permission issues. By capturing and displaying these error messages, developers can quickly identify and resolve any problems in their database queries. 

// Example of using mysql_error() to troubleshoot database queries
$query = "SELECT * FROM users WHERE id = 1";
$result = mysql_query($query);

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

// Process the query result here

Keywords

mysql_error() troubleshooting PHP code database queries error handling

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