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

Answer 1

The error flags are power of 2 integers so you can combine them using bit operators. The result is an integer like the one you see so if you set it to E_ALL & ~E_NOTICE it will still end up as integer. What flags comprise the 6135 value depends on your php version. You can check if a flag is contained within it using the bitwise and operator, e.g.

if ((error_reporting() & E_NOTICE) == E_NOTICE) {
    echo "E_NOTICE is active";
}