How can PHP developers effectively troubleshoot and resolve issues related to the mysql_fetch_array() function returning a boolean instead of a resource?

When the mysql_fetch_array() function returns a boolean instead of a resource, it typically indicates that the query did not return any results. To resolve this issue, you can check if the result is a boolean value and handle it accordingly by modifying your query or checking for errors in your database connection.

$result = mysql_query($query);

if($result === false){
    // Handle error or return appropriate response
} else {
    while($row = mysql_fetch_array($result)){
        // Process the data
    }
}