What are common reasons for the error "supplied argument is not a valid MySQL result resource" in PHP?

The error "supplied argument is not a valid MySQL result resource" in PHP typically occurs when a query is executed incorrectly or when there is an issue with the connection to the database. To solve this issue, make sure that the query is correct and that the connection to the database is established properly. 

// Example of correcting the issue with the MySQL result resource error
// Assuming $conn is the database connection object

$query = "SELECT * FROM table_name";
$result = mysqli_query($conn, $query);

if($result) {
    // Process the result
    while($row = mysqli_fetch_assoc($result)) {
        // Do something with the data
    }
} else {
    echo "Error: " . mysqli_error($conn);
}

Keywords

PHP MySQL error result resource validation

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