AC_MSG_CHECKING([for zlib.h])
ZLIB_DIR=
for i in "$PHP_HTTP_ZLIB_COMPRESSION" "$PHP_ZLIB_DIR" "$PHP_ZLIB" /usr/local /usr /opt; do
AC_MSG_CHECKING([for zlib.h])
ZLIB_DIR=
for i in "$PHP_HTTP_ZLIB_COMPRESSION" "$PHP_ZLIB_DIR" "$PHP_ZLIB" /usr/local /usr /opt; do