mixed File_Passwd_Common::_save ( 
    string $content
   )
Save content to file.
(package developer related)
$content
     file content
Returns TRUE on success, PEAR_Error on failure.
| Error Code | Summary | 
|---|---|
| FILE_PASSWD_E_DIR_NOT_CREATED | the directory in which the passwd file should reside couldn't be created | 
| FILE_PASSWD_E_FILE_NOT_OPENED | passwd file couldn't be opened in write mode | 
| FILE_PASSWD_E_FILE_NOT_LOCKED | passwd file couldn't be locked exclusively | 
| FILE_PASSWD_E_FILE_NOT_UNLOCKED | passwd file couldn't be unlocked | 
| FILE_PASSWD_E_FILE_NOT_CLOSED | passwd file couldn't be closed | 
This function can not be called statically.