How can the issue of "Call to a member function fetch_assoc() on null" be resolved in PHP mysqli queries?

The issue of "Call to a member function fetch_assoc() on null" typically occurs when the query executed by mysqli returns no results, causing the variable holding the result set to be null. To resolve this issue, you should check if the result set is not null before attempting to fetch data from it. 

// Perform the query
$result = $mysqli->query("SELECT * FROM table_name");

// Check if the result set is not null
if ($result && $result->num_rows > 0) {
    // Fetch data from the result set
    while ($row = $result->fetch_assoc()) {
        // Process the data
    }
} else {
    // Handle the case when no results are returned
}

Keywords

PHP mysqli fetch_assoc null error

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