PHP: End official support for PHP5.2 -> 5.5

For the time being, we are ok with failures rather than not running the tests at all on these old versions. We will make decisions on fixes on a case by case basis.

Props chanthaboune.
See: https://make.wordpress.org/core/2018/12/08/updating-the-minimum-php-version/



git-svn-id: https://develop.svn.wordpress.org/trunk@44950 602fd350-edb4-49c9-b593-d223f7449a82

.travis.yml

@@ -34,6 +34,12 @@ matrix:
     dist: precise
   - php: nightly
   allow_failures:
+  - php: 5.5
+  - php: 5.4
+  - php: 5.3
+    dist: precise
+  - php: 5.2
+    dist: precise
   - php: 7.4snapshot
   - php: nightly
 before_install: