Analysis of PHP bitwise AND or (^ ,)

This article provides a detailed analysis of the bitwise AND or (^,) in PHP. For more information, see

This article provides a detailed analysis of the bitwise AND or (^,) in PHP. For more information, see

Today, a friend in the group asked a question about bitwise AND or ..
I have been working in PHP for a year. Maybe I am not familiar with this part. Here I will introduce this part to new users.
Operations on binary data are mainly performed by location.

The Code is as follows:

$ A = 1;
$ B = 2;
$ C = $ a ^ B;
Echo $ c // 3
?>

This is not a simple addition.
Convert decimal 1 to binary 00000001
Convert decimal 2 to binary 00000010
Bitwise ^ 00000011 // The values of different values are regarded as 1 ^
Then, server space, U.S. servers, website space,

The Code is as follows:

$ A = 1;
$ B = 2;
Echo $ a & $ c; // 1
?>

Convert decimal 3 to binary 00000011
Convert decimal 1 to binary 00000001
Bitwise & 00000001 // The value remains the same for each single digit. Otherwise, the value is 0.
Finally, we will introduce the usage; it makes no sense to return values after bitwise. It is mainly used to determine whether $ a exists in $ c. // There are many permission usage options.

The Code is as follows:

$ My_privilege = 15; // 1 + 2 + 4 + 8 have all Permissions
$ Pri = '';
$ Privilege_arr = array (8 => 'add', 4 => 'delete', 2 => 'change', 1 => 'query ');
Foreach ($ privilege_arr as $ k => $ v ){
$ K & $ my_privilege & $ Pri. = ''I have '. $ v.' Power
';
}
Echo $ Pri;
?>