Disabling broken mac php tests (#10218)

diff --git a/kokoro/macos/php7.0_mac/build.sh b/kokoro/macos/php7.0_mac/build.sh
index e5a37e3..c6717e0 100755
--- a/kokoro/macos/php7.0_mac/build.sh
+++ b/kokoro/macos/php7.0_mac/build.sh
@@ -8,4 +8,5 @@
 # Prepare worker environment to run tests
 source kokoro/macos/prepare_build_macos_rc
 
-./tests.sh php7.0_mac
+# TODO(mkruskal) Re-enable this once we can get a working PHP 7.0 installed.
+#./tests.sh php7.0_mac
diff --git a/kokoro/macos/php7.3_mac/build.sh b/kokoro/macos/php7.3_mac/build.sh
index 2d2f679..2688ddb 100755
--- a/kokoro/macos/php7.3_mac/build.sh
+++ b/kokoro/macos/php7.3_mac/build.sh
@@ -8,4 +8,5 @@
 # Prepare worker environment to run tests
 source kokoro/macos/prepare_build_macos_rc
 
-./tests.sh php7.3_mac
+# TODO(mkruskal) Re-enable this once we can get a working PHP 7.0 installed.
+#./tests.sh php7.3_mac