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decbin

Description

Decimal to binary

Syntax

decbin ( int $number ) : string

Parameters

number

Decimal value to convert

Negative DecimalPositive DecimalBinary
00
11
210
......
9223372036854775806111111111111111111111111111111111111111111111111111111111111110
9223372036854775807 (largest signed integer)111111111111111111111111111111111111111111111111111111111111111 (63)
-922337203685477580892233720368547758081000000000000000000000000000000000000000000000000000000000000000
.........
-2184467440737095516141111111111111111111111111111111111111111111111111111111111111110
-118446744073709551615 (largest unsigned integer)1111111111111111111111111111111111111111111111111111111111111111 (64)

Return

Binary string representation of number

Examples

1

<?

$number = 0;

$return = decbin($number);

echo $return;

?>
0

2

<?

$number = 1;

$return = decbin($number);

echo $return;

?>
1

3

<?

$number = 2;

$return = decbin($number);

echo $return;

?>
10

4

<?

$number = 9223372036854775806;

$return = decbin($number);

echo $return;

?>
111111111111111111111111111111111111111111111111111111111111110

5

<?

$number = 9223372036854775807;

$return = decbin($number);

echo $return;

?>
111111111111111111111111111111111111111111111111111111111111111

6

<?

$number1 = -9223372036854775808;
$number2 = 9223372036854775808;

$return1 = decbin($number1);
$return2 = decbin($number2);

echo $return1 . PHP_EOL;
echo $return2;

?>

7

<?

$number1 = -2;
$number2 = 18446744073709551614;

$return1 = decbin($number1);
$return2 = decbin($number2);

echo $return1 . PHP_EOL;
echo $return2;

?>

8

<?

$number1 = -1;
$number2 = 18446744073709551615;

$return1 = decbin($number1);
$return2 = decbin($number2);

echo $return1 . PHP_EOL;
echo $return2;

?>
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