Description
array 
mcrypt_list_modes ( [string lib_dir])
     mcrypt_list_modes() is used to get an
     array of all supported modes in the
     lib_dir.
    
     mcrypt_list_modes() takes as optional
     parameter a directory which specifies the directory where all
     modes are located. If not specifies, the value of the
     mcrypt.modes_dir php.ini directive is used.
    
     
例子 1. mcrypt_list_modes() Example 
<?php     $modes = mcrypt_list_modes();
      foreach ($modes as $mode) {         echo "$mode <br />\n";     } ?>
 |  
 
       The above example will produce a list with all supported
       algorithms in the default mode directory. If it is not set
       with the ini directive mcrypt.modes_dir, the default directory
       of mcrypt is used (which is /usr/local/lib/libmcrypt).
        |