decbin
(PHP 4, PHP 5, PHP 7, PHP 8)
decbin — Decimal to binary
Description
decbin(int
$num): string
Returns a string containing a binary representation of the given
num argument.
Parameters
-
num -
Decimal value to convert
Range of inputs on 32-bit machines positive numnegative numreturn 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) Range of inputs on 64-bit machines positive numnegative numreturn 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 num
Examples
Example #1 decbin() example
<?php
echo decbin(12) . "\n";
echo decbin(26);
?>
The above example will output:
1100 11010
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