What potential issue might be causing the posted data not to be updated in the database?

The potential issue causing the posted data not to be updated in the database could be that the SQL query is not properly constructed to update the specific row in the database. To solve this issue, ensure that the SQL query includes the correct WHERE clause to target the specific row that needs to be updated. 

// Assuming $conn is the database connection and $id is the unique identifier of the row to be updated

// Retrieve posted data
$name = $_POST['name'];
$email = $_POST['email'];

// Construct SQL query to update the row with the specific id
$sql = "UPDATE table_name SET name='$name', email='$email' WHERE id=$id";

// Execute the SQL query
if ($conn->query($sql) === TRUE) {
    echo "Record updated successfully";
} else {
    echo "Error updating record: " . $conn->error;
}

Keywords

PHP database SQL injection form submission data validation

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