Question

Can you help me to write a number in its binary notation in PHP code and Javascript.

158 is decimal, 0xFF is hexa, 0154 is octa but how is binary ?

I want to set a value in php and read it in Javascript :

PHP:

$error &= 1000 (here must be the binary notation)
$error &= 0010

Javascript :

if (error & 0010) {alert(1)}

Thank you very much, your help is appreciated.

Part of the answer is here, there seems to be nothing for PHP :
What's the prefix for binary in PHP?

Answer 1

Binary literals don’t exist in php. Binary manipulations are usually done in hex,

error & 0010 (binary)

can be replaced with

error & 0x2

Also, see this related post What's the prefix for binary in PHP?