&reftitle.constants; &extension.constants;

`CRYPT_SALT_LENGTH` (`int`)

`CRYPT_STD_DES` (`int`)

- Indicates whether standard DES-based hashes are supported in `crypt`. Always `1`.

`CRYPT_EXT_DES` (`int`)

- Indicates whether extended DES-based hashes are supported in `crypt`. Always `1`.

`CRYPT_MD5` (`int`)

- Indicates whether MD5 hashes are supported in `crypt`. Always `1`.

`CRYPT_BLOWFISH` (`int`)

- Indicates whether Blowfish hashes are supported in `crypt`. Always `1`.

`CRYPT_SHA256` (`int`)

- Indicates whether SHA-256 hashes are supported in `crypt`. Always `1`.

`CRYPT_SHA512` (`int`)

- Indicates whether SHA-512 hashes are supported in `crypt`. Always `1`.

`HTML_SPECIALCHARS` (`int`)

`HTML_ENTITIES` (`int`)

`ENT_COMPAT` (`int`)

`ENT_QUOTES` (`int`)

`ENT_NOQUOTES` (`int`)

`ENT_IGNORE` (`int`)

`ENT_SUBSTITUTE` (`int`)

`ENT_DISALLOWED` (`int`)

`ENT_HTML401` (`int`)

`ENT_XML1` (`int`)

`ENT_XHTML` (`int`)

`ENT_HTML5` (`int`)

`CHAR_MAX` (`int`)

`LC_CTYPE` (`int`)

`LC_NUMERIC` (`int`)

`LC_TIME` (`int`)

`LC_COLLATE` (`int`)

`LC_MONETARY` (`int`)

`LC_ALL` (`int`)

`LC_MESSAGES` (`int`)

`STR_PAD_LEFT` (`int`)

`STR_PAD_RIGHT` (`int`)

`STR_PAD_BOTH` (`int`)