decbin
(PHP 4, PHP 5, PHP 7)
decbin — Decimal to binary
Description
string decbin ( int $number ) Returns a string containing a binary representation of the given number argument.
Parameters
number
Decimal value to convert
positive number | negative number | return value |
|---|---|---|
0 | | 0 |
1 | | 1 |
2 | | 10 |
| ... normal progression ... |
| 2147483646 | | 1111111111111111111111111111110 |
| 2147483647 (largest signed integer) | | 1111111111111111111111111111111 (31 1's) |
| 2147483648 | -2147483648 | 10000000000000000000000000000000 |
| ... normal progression ... |
| 4294967294 | -2 | 11111111111111111111111111111110 |
| 4294967295 (largest unsigned integer) | -1 | 11111111111111111111111111111111 (32 1's) |
positive number | negative number | return value |
|---|---|---|
0 | | 0 |
1 | | 1 |
2 | | 10 |
| ... normal progression ... |
| 9223372036854775806 | | 111111111111111111111111111111111111111111111111111111111111110 |
| 9223372036854775807 (largest signed integer) | | 111111111111111111111111111111111111111111111111111111111111111 (63 1's) |
| | -9223372036854775808 | 1000000000000000000000000000000000000000000000000000000000000000 |
| ... normal progression ... |
| | -2 | 1111111111111111111111111111111111111111111111111111111111111110 |
| | -1 | 1111111111111111111111111111111111111111111111111111111111111111 (64 1's) |
Return Values
Binary string representation of number
Examples
Example #1 decbin() example
<?php
echo decbin(12) . "\n";
echo decbin(26);
?>The above example will output:
1100
11010See Also
- bindec() - Binary to decimal
- decoct() - Decimal to octal
- dechex() - Decimal to hexadecimal
- base_convert() - Convert a number between arbitrary bases
- printf() - Output a formatted string, using %b, %032b or %064b as the format
- sprintf(), using %b, %032b or %064b as the format
← cosh
dechex →
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