Numeric values of error reporting levels

Question

I'm checking the configuration of my PHP server and I need to set the following parameter as follows:

error_reporting set to E_ALL & ~E_NOTICE

However on my server a numeric value is set:

error_reporting 6135 6135

I was wondering what's the meaning of it, and if I really need to change it

thanks

Answer 1

foreach(
    array('E_ALL', 'E_NOTICE', '~E_NOTICE', 'E_ALL&~E_NOTICE') 
    as $s) {
    eval("\$v=$s;");
    printf("%20s = dec %10u = bin %32b\n", $s, $v, $v);
}

result

           E_ALL = dec       6143 = bin                    1011111111111
        E_NOTICE = dec          8 = bin                             1000
       ~E_NOTICE = dec 4294967287 = bin 11111111111111111111111111110111
 E_ALL&~E_NOTICE = dec       6135 = bin                    1011111110111

Answer 2

Values used for error reporting

 E_RECOVERABLE_ERROR  4096 +
E_USER_NOTICE        1024 +
E_USER_WARNING        512 +
E_USER_ERROR          256 +
E_COMPILE_WARNING     128 +
E_COMPILE_ERROR        64 +
E_CORE_WARNING         32 +
E_CORE_ERROR           16 +
E_PARSE                 4 +
E_WARNING               2 +
E_ERROR                 1 +
                   = 6135