user_pass_md5

The WordPress current user’s password is hashed and stored in this global variable. It is set using the cookie in the pluggable functions set_current_user($id, $name='') and get_currentuserinfo() defined in [wordpress root folder]/wp-includes/pluggable-functions.php.

Plugin and theme authors need not use this variable, unless they are changing the hashing algorithm or changing the authentication system.

Back to the full list of global variables.

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