What is the significance of removing unnecessary commas in SQL queries when using PHP?

Removing unnecessary commas in SQL queries when using PHP is significant because it can cause syntax errors and lead to query execution failures. To solve this issue, carefully review the SQL query and remove any extra commas that are not needed for separating columns or conditions.

$sql = "SELECT column1, column2 FROM table_name WHERE condition1 = 'value1' AND condition2 = 'value2'";
$result = mysqli_query($conn, $sql);