Difference between floor and bitwise OR, normally used to check status code of a request, being of category 2xx

diff_floor_bitwiseOr.php

<?php

// https://3v4l.org/XCGmc

$code = 204;

$equals_to = 2;

// define("DEBUG", 1);

function debug()
{
    if (!defined("DEBUG") || !func_num_args()) {
        return;
    }
    
    call_user_func_array("var_dump", func_get_args());
}

$equals = function ($v) {
    debug($v);
    
    return $v == $GLOBALS["equals_to"];
};

$strict = function ($v) {
    debug($v);

    return $v === $GLOBALS["equals_to"];
};

function floor_n($v) {
    debug($v);
    
    return floor($v);
}

function floor_bw($v) {
    debug($v);
    
    return 0 | $v;
}

$functions = ["floor_n", "floor_bw"];

$operators = [$equals, $strict];

foreach ($functions as $function) {
    foreach ($operators as $operator) {
        var_dump($operator($function($code / 100)));
        
        echo "\r\n";
    }
    
    echo "\r\n";
}