LDAP_ESCAPE_FILTER = 1
LDAP_ESCAPE_DN = 2
hash_equals( $knownString, $userInput)
ldap_escape( $subject, $ignore = '', $flags)
gzopen( $filename, $mode, $use_include_path)
gzseek( $zp, $offset, $whence = SEEK_SET)
gztell( $zp)