What's the prefix for binary in PHP?

Question

It\'s neither 0x nor 0; what is it? Is there?

Answer 1

Check the manual: PHP only supports decimal, hexadecimal and octal integer notation, but you can use bindec() instead.

Also, keep in mind that each hex digit represents 4 bits, so it's easy to convert between binary notation and hex. The same is true for octal, but for various reasons it's used less often in practice.