How can the error message "supplied argument is not a valid MySQL result resource" be resolved when using mysql_fetch_array() in PHP?

The error message "supplied argument is not a valid MySQL result resource" typically occurs when the result set returned by the MySQL query is not valid or empty. To resolve this issue, you should check if the query execution was successful before attempting to fetch data using mysql_fetch_array(). 

// Check if the query execution was successful
$result = mysql_query($query);
if($result) {
    // Fetch data using mysql_fetch_array()
    while($row = mysql_fetch_array($result)) {
        // Process the fetched data
    }
} else {
    echo "Error: " . mysql_error();
}

Keywords

mysql_fetch_array PHP MySQL error message result resource

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