The is a simple test of several of the new modules included with PHP5 (and therefore do not work with PHP4). Specifically, the DATE, DOM, EXIF, MHASH, HASH, ICONV, LIBXML,
MBSTRING, MCRYPT, MYSQLI, PDO, REFLECTION, SIMPLEXML, SOAP, SPL, SQLITE, WDDX, XMLREADER, and XMLWRITER modules are tested. Those tests that do not have visible output are marked
as such. If a test fails (you will see an obvious php error) any test after that test will not run.