HAVE_IMAP_KRB     854 ext/imap/php_imap.c #if HAVE_IMAP_KRB && defined(HAVE_IMAP_AUTH_GSS)
HAVE_IMAP_KRB    1134 ext/imap/php_imap.c #if HAVE_IMAP_KRB && HAVE_IMAP_AUTH_GSS