In C #, which method does UTF8Encoding. UTF8.GetBytes (key) correspond to in PHP? How to write?

In C #, which method does UTF8Encoding. UTF8.GetBytes (key) correspond to in PHP? How to write? In C #, which method does UTF8Encoding. UTF8.GetBytes (key) correspond to in PHP?
How to write?

Reply to discussion (solution)

$ S = 'Chinese ABC'; $ s = iconv ('gbk', 'utf-8', $ s ); // The utf-8print_r (unpack ('C * ', $ s) is not required when UTF-8 is not used ));

Array(    [1] => 228    [2] => 184    [3] => 173    [4] => 230    [5] => 150    [6] => 135    [7] => 97    [8] => 98    [9] => 99)

C # Test

Foreach (var c in UTF8Encoding. UTF8.GetBytes ("Chinese abc") {Console. WriteLine (c );}

$ S = 'Chinese ABC'; $ s = iconv ('gbk', 'utf-8', $ s ); // The utf-8print_r (unpack ('C * ', $ s) is not required when UTF-8 is not used ));

Array(    [1] => 228    [2] => 184    [3] => 173    [4] => 230    [5] => 150    [6] => 135    [7] => 97    [8] => 98    [9] => 99)

C # Test

Foreach (var c in UTF8Encoding. UTF8.GetBytes ("Chinese abc") {Console. WriteLine (c );}