In cases where PHP code works under WAMP but not under IIS, what steps can be taken to troubleshoot and resolve the issue?

When PHP code works under WAMP but not under IIS, it may be due to differences in the server configurations. One common issue is the use of short tags in PHP code, which are enabled by default in WAMP but disabled in IIS. To resolve this, you can update your PHP code to use the full `<?php ?>` tags instead of short tags `<? ?>`.

// Before
&lt;? echo &quot;Hello, World!&quot;; ?&gt;

// After
&lt;?php echo &quot;Hello, World!&quot;; ?&gt;