PHP else if methods isn't working? - php

Question

Hello I am trying to implement after they pay it checks how much they paid and inputs different variables in sql database with if methods.
The problem:
The problem is all the if methods return to this first option(inserts paid=1, and 30days) not sure what the problem is, is my if method broken?what's wrong please explain! thanks!
if(number_format($amount, 2) == 8.00)
{
$mysqli = new mysqli(******);
$stmt = $mysqli->prepare("UPDATE `as_users` SET paid='1', reg_date=CURRENT_TIMESTAMP, end_date=DATE_ADD(CURRENT_TIMESTAMP(), INTERVAL 30 DAY) WHERE username = ?");
$stmt->bind_param('s', $username);
$stmt->execute();
} elseif (number_format($amount, 2) == 10.00)
{
$mysqli = new mysqli(******);
$stmt = $mysqli->prepare("UPDATE `as_users` SET paid='2', reg_date=CURRENT_TIMESTAMP, end_date=DATE_ADD(CURRENT_TIMESTAMP(), INTERVAL 30 DAY) WHERE username = ?");
$stmt->bind_param('s', $username);
$stmt->execute();
} elseif (number_format($amount, 2) == 100.00)
{
$mysqli = new mysqli(******);
$stmt = $mysqli->prepare("UPDATE `as_users` SET paid='2', reg_date=CURRENT_TIMESTAMP, end_date=DATE_ADD(CURRENT_TIMESTAMP(), INTERVAL 365 DAY) WHERE username = ?");
$stmt->bind_param('s', $username);
$stmt->execute();
}
Edit: I tried with $amount and also tried using the names of the array from dropdown menu I have
array("Basic Package-Monthly", "8.00", "Month", "1", "0", "0"),
array("Premium Package-Monthly", "10.00", "Month", "1", "0", "0"),
array("Premium Package-Annually", "100.00", "Year", "1", "0", "0"),

Answer 1

Why worry about the conditional statement, let the switch handle it. Leverage your prepared statement fully.
$mysqli = new mysqli('******');
$paid = false;
$recurring = false;
switch(number_format($amount, 2)):
case '8.00':
$paid = 1;
$recurring = 30;
break;
case '10.00':
$paid = 2;
$recurring = 30;
break;
case '100.00':
$paid = 2;
$recurring = 365;
break;
endswitch;
$stmt = $mysqli->prepare("UPDATE `as_users` SET paid=?, reg_date=CURRENT_TIMESTAMP, end_date=DATE_ADD(CURRENT_TIMESTAMP(), INTERVAL ? DAY) WHERE username = ?");
$stmt->bind_param('dis', $paid, $recurring, $username);
$stmt->execute();

Answer 2

try to use
number_format($amount, 2, '.', '') instead of number_format($amount, 2) for returning english notation without thousands separator.
i.e
english notation without thousands separator
$number = 1234.56;
$english_format_number = number_format($number, 2, '.', '');
1234.56
and to compare two float values use BC math function
$b = 10.00;
$a = number_format($amount, 2, '.', '');
bccomp($a, $b)==0 // returns true if both values are 10.00