What are the potential reasons for a "non-object" error when using a correct SQL statement in PHP?

The "non-object" error in PHP typically occurs when trying to access a property or method of a variable that is not an object. This could happen if the SQL query did not return any results, resulting in a non-object variable being used. To solve this issue, you should check if the query returned a valid object before trying to access its properties or methods. 

// Execute the SQL query
$result = $conn->query("SELECT * FROM table WHERE condition");

// Check if the query returned a valid object
if ($result && $result->num_rows > 0) {
    // Fetch the data from the result object
    while ($row = $result->fetch_assoc()) {
        // Process the data here
    }
} else {
    echo "No results found.";
}

Keywords

PHP SQL object error debugging data retrieval

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