diff --git a/configure.ac b/configure.ac
index 69e292c..3f135b1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -162,6 +162,8 @@
 AM_CONDITIONAL([THRIFT_GEN_rb], [test "$ax_thrift_gen_rb" = "yes"])
 AX_THRIFT_GEN(perl, [Perl], yes)
 AM_CONDITIONAL([THRIFT_GEN_perl], [test "$ax_thrift_gen_perl" = "yes"])
+AX_THRIFT_GEN(php, [PHP], yes)
+AM_CONDITIONAL([THRIFT_GEN_php], [test "$ax_thrift_gen_php" = "yes"])
 AX_THRIFT_GEN(erl, [Erlang], yes)
 AM_CONDITIONAL([THRIFT_GEN_erl], [test "$ax_thrift_gen_erl" = "yes"])
 AX_THRIFT_GEN(cocoa, [Cocoa], yes)