How can ambiguous column names in PHP queries be resolved to avoid errors?

Ambiguous column names in PHP queries can be resolved by explicitly specifying the table name or alias along with the column name in the query. This helps the database engine to correctly identify which column is being referred to and avoids errors related to ambiguous column names.

$query = "SELECT table1.column_name, table2.column_name FROM table1, table2 WHERE table1.id = table2.id";
$result = mysqli_query($connection, $query);

// Fetch and display results
while ($row = mysqli_fetch_assoc($result)) {
    echo $row['table1.column_name'] . " - " . $row['table2.column_name'] . "<br>";
}