如何按名称删除会话

Question

如何通过名称示例删除php会话session['sec']，session['page']我需要删除session['page']而无需删除session['sec']

Answer 1

// for a single variable
unset($_SESSION['session_var']); 

// destroy the Session, not just the data stored!
session_destroy();

// delete the session contents, but keep the session_id and name:
session_unset();