Add str starts with

[jopbdavid]

Description

Added new entry @ docs/content/php/concepts/string-functions/terms/str-starts-with/str-starts-with.md (Note the path uses dashes, not underscores.) - for [PHP] about the str_starts_with() function.

Type of Change

• Adding a new entry

Checklist

• All writings are my own.
• My entry follows the Codecademy Docs style guide.
• [x ] My changes generate no new warnings.
• I have performed a self-review of my own writing and code.
• I have checked my entry and corrected any misspellings.
• I have made corresponding changes to the documentation if needed.
• I have confirmed my changes are not being pushed from my forked main branch.
• I have confirmed that I'm pushing from a new branch named after the changes I'm making.
• Under "Development" on the right, I have linked any issues that are relevant to this PR (write "Closes # in the "Description" above).

[SSwiniarski]

@jopbdavid I did a first review and only had a couple of comments.

[SSwiniarski]

@jopbdavid Looks good for a second review.

[caupolicandiaz]

@jopbdavid @SSwiniarski I made a few small changes. Looks good to go

[github-actions]

👋 @jopbdavid
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[SSwiniarski]

@jopbdavid Congrats on the new entry! Live link here: https://www.codecademy.com/resources/docs/php/string-functions/str-starts-with