# Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

`CRYPT_SALT_LENGTH` int
`CRYPT_STD_DES` int
`CRYPT_EXT_DES` int
`CRYPT_MD5` int
`CRYPT_BLOWFISH` int
`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)