I can not understand how to correctly translate a 16thic binary number into php.

There are two options:

print base_convert(0xf, 16, 2)."\n"; print base_convert("f", 16, 2)."\n";

At the output we get:

 10101 1111

UPD
The correct question will be:
From which hangover the standard function translates the hexadecimal 0xf into the decimal 15 and then separately translates each digit into binary code with the result 10101
instead of the expected 1111?

    1 answer 1

    For PHP 0xf, this is a decimal number:

     print base_convert(0xf, 10, 2)."\n"; // => 1111

    Correctly:

     print base_convert("0xf", 16, 2)."\n"; // => 1111