DOC-6755 fixed incorrect Run in Browser link for PHP

[andy-stark-redis]

Note

Low Risk
Documentation example metadata only; no runtime or product behavior changes.

Overview
Fixes the incorrect Run in Browser target for PHP on the arrays tutorial (DOC-6755).

In DtArraysTest.php, removes the // BINDER_ID php-arrays-tutorial marker so the example follows the same pattern as the other arrays_tutorial clients, which use only // EXAMPLE: arrays_tutorial for doc/runner binding. The stray binder id was pointing the browser runner at the wrong asset.

Also wraps the PHPUnit TestCase import in REMOVE_START / REMOVE_END so it is stripped from published snippets like the extends TestCase boilerplate already was.

^{Reviewed by Cursor Bugbot for commit e77ae1d. Bugbot is set up for automated code reviews on this repo. Configure here.}

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[github-actions]

DOC-6755

[jit-ci]

🛡️ Jit Security Scan Results

✅ No security findings were detected in this PR

---

^{Security scan by Jit}

[dwdougherty]

LGTM.

[andy-stark-redis]

Thanks @dwdougherty !