For a complete list of supported ciphers, see the defines at the end of mcrypt.h.
For a complete list of supported ciphers, see the defines at the end of mcrypt.h. The general rule with the mcrypt-2.2.x API is that you can access the cipher from PHP with MCRYPT_ciphername. With the mcrypt-2.4.x API these constants also work, but it is possible to specify the name of the cipher as a string with a call to mcrypt_module_open().