What are some common logical errors to watch out for when coding PHP scripts for data deletion and page refreshing?

One common logical error to watch out for when coding PHP scripts for data deletion is not properly checking if the deletion was successful before refreshing the page. This can lead to the page refreshing even if the deletion failed, giving users a false impression that the data was deleted. To solve this, always check the result of the deletion operation before refreshing the page.

// Check if deletion was successful before refreshing the page
if ($deletion_success) {
    // Data deletion successful, refresh the page
    header("Location: ".$_SERVER['PHP_SELF']);
    exit();
} else {
    // Data deletion failed, show an error message
    echo "Error deleting data.";
}