Show 8 bit bytes in PHP

Question

I was wondering if there is an easy way to display 8 bit bytes (or char) in PHP.

For example, for ASCII encoding, the character "0" should return 0011 0000

Thanks for your input!

Answer 1

This should complete the task:

$bin = decbin(ord($char)); $bin = str_pad($bin, 8, 0, STR_PAD_LEFT); 

Answer 2

You can use bitwise operators to do this.

 $a='C'; for ($i=0; $i<8; $i++) { var_dump((ord($a) & (1<<$i))>>$i); } 

Output:

 int(1) int(1) int(0) int(0) int(0) int(0) int(1) int(0) 

Answer 3

Another solution, including a space between four digits:

 $char = 0; echo chunk_split(sprintf('%08b', ord($char)), 4, ' ');