Add PHP OOP Tutorial in Hindi (#10021)

* Add PHP OOP Tutorial in Hindi

* Try to fixed

* Update free-courses-hi.md

* Alphabetical ordering fix

* Title Update

courses/free-courses-hi.md

@@ -502,6 +502,7 @@
 
 * [Core PHP (Hindi)](https://www.youtube.com/playlist?list=PLbGui_ZYuhigFdLdbSI2EM2MrJB7I0j-B) - Rajesh Kumar, Geeky Shows
 * [PHP MYSQL Tutorial In Hindi \| Backend Development in Hindi in 2020](https://www.youtube.com/playlist?list=PLwGdqUZWnOp1U4kemcU_vF9KQuHXlNxkb) - Thapa Technical
+* [PHP OOP Tutorial in Hindi / Urdu](https://www.youtube.com/playlist?list=PL0b6OzIxLPbwoi6Urr4LZTz2AMMCtzqDt) - Yahoo Baba
 * [PHP Tutorial for beginners in Hindi](https://www.youtube.com/playlist?list=PLmGElG-9wxc_Hp_bqKH0-cpeboH1_sQg7) - ScoreShala
 * [PHP Tutorial in Hindi / Urdu](https://www.youtube.com/playlist?list=PL0b6OzIxLPbyrzCMJOFzLnf_-_5E_dkzs) - Yahoo Baba
 * [PHP Tutorials in Hindi](https://youtube.com/playlist?list=PLu0W_9lII9aikXkRE0WxDt1vozo3hnmtR) - CodeWithHarry